Not sure why it was OK on python2 and not sure if this has to be done
or the promise code needs to cast the results of getConfig()

Otherwise it fails with the following exception because of non-ASCII characters
(`[A-Z&é@{]{3,7})`) (see unconvert()) below):

  => erp5_core/PathTemplateItem/portal_preferences/default_site_preference.xml
     File "zodbpickle-2.0.0-py3.7-linux-x86_64.egg/zodbpickle/pickle_3.py", line 844, in load
        dispatch[key[0]](self)
     File "zodbpickle-2.0.0-py3.7-linux-x86_64.egg/zodbpickle/pickle_3.py", line 1035, in load_short_binstring
        self.append(self.decode_string(data))
     File "zodbpickle-2.0.0-py3.7-linux-x86_64.egg/zodbpickle/pickle_3.py", line 989, in decode_string
        return value.decode(self.encoding, self.errors)
  UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 19: ordinal not in range(128)

This reverts commit 6c399134.

See merge request !1300

Credit: This originally based on XU Lu's work
I rewrite it base on Romain's comment and add the tests

See merge request nexedi/slapos!1362

Since f48a06ec noVNC is broken: the
default port for websocket is 5700 + display (and not 5900 + display).

Fix this error and add a promise to test websocket.

This reverts commit f1f09628.

This causes mariadb crashes, maybe because of groonga:

mariadb_error.log:

  230306 11:55:00 [ERROR] mysqld got signal 11 ;

gdb:

  Thread 176 (Thread 0x7f92e02c0700 (LWP 59293)):
  #0  0x00007f9b9521871b in ?? () from /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007f9b951961bb in ?? () from /lib/x86_64-linux-gnu/libc.so.6
  #2  0x00007f9b951d88ca in fork () from /lib/x86_64-linux-gnu/libc.so.6
  #3  0x000055f8f620d510 in start_addr2line_fork (binary_path=0x7ffeb54a7f4e "/srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/bin/mysqld") at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/mysys/my_addr_resolve.c:192
  #4  start_addr2line_fork (binary_path=0x7ffeb54a7f4e "/srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/bin/mysqld") at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/mysys/my_addr_resolve.c:175
  #5  0x000055f8f620d644 in my_addr_resolve (ptr=0x55f8f61f886e <my_print_stacktrace+46>, loc=loc@entry=0x7f92e02bb840) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/mysys/my_addr_resolve.c:241
  #6  0x000055f8f61f88c3 in print_with_addr_resolve (n=<optimized out>, addrs=0x7f92e02bb860) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/mysys/stacktrace.c:159
  #7  my_print_stacktrace (stack_bottom=<optimized out>, thread_stack=<optimized out>, silent=silent@entry=0 '\000') at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/mysys/stacktrace.c:178
  #8  0x000055f8f5d075cd in handle_fatal_signal (sig=11) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/signal_handler.cc:230
  #9  <signal handler called>
  #10 0x00007f9b95194973 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
  #11 0x00007f9b951971a2 in calloc () from /lib/x86_64-linux-gnu/libc.so.6
  #12 0x00007f9b903d7e3c in grn_calloc_default (ctx=0x7f90441927e8, size=112, file=0x7f9b907cd060 "hash.c", line=1981, func=<optimized out>) at alloc.c:761
  #13 0x00007f9b904cbd9f in grn_hash_init_wal_data (hash=0x7f904418bee0, ctx=0x7f90441927e8) at hash.c:2002
  #14 grn_hash_init (path=<optimized out>, key_size=<optimized out>, value_size=0, flags=64, hash=0x7f904418bee0, ctx=0x7f90441927e8) at hash.c:2002
  #15 grn_hash_init (ctx=0x7f90441927e8, hash=0x7f904418bee0, path=<optimized out>, key_size=<optimized out>, value_size=0, flags=64) at hash.c:1990
  #16 0x00007f9b904ce6b4 in grn_hash_create (ctx=ctx@entry=0x7f90441927e8, path=path@entry=0x0, key_size=key_size@entry=4, value_size=value_size@entry=0, flags=flags@entry=64) at hash.c:2043
  #17 0x00007f9b90733a59 in grn_table_all_columns (ctx=ctx@entry=0x7f90441927e8, table=table@entry=0x7f91c97c0480) at table.c:740
  #18 0x00007f9b903fc0fc in delete_reference_records (id=<optimized out>, table=0x7f91c97c0480, ctx=0x7f90441927e8) at db.c:4215
  #19 grn_table_delete_prepare (ctx=0x7f90441927e8, table=0x7f91c97c0480, id=2, key=0x0, key_size=0) at db.c:4246
  #20 0x00007f9b903fc8b7 in _grn_table_delete_by_id (ctx=0x7f90441927e8, table=0x7f91c97c0480, id=2, optarg=0x0) at db.c:4324
  #21 0x00007f9b903fca64 in grn_table_delete_by_id (ctx=0x7f90441927e8, table=0x7f91c97c0480, id=2) at db.c:4356
  #22 0x00007f9b910fe2de in mrn::Operations::finish (this=<optimized out>, id=<optimized out>) at mrn_operations.cpp:144
  #23 0x00007f9b910feecf in mrn::Operation::~Operation (this=<optimized out>, __in_chrg=<optimized out>) at mrn_operation.cpp:39
  #24 0x00007f9b910eb354 in ha_mroonga::storage_write_row (this=0x7f9044190fc0, buf=0x7f8f740309f0 "\376Fd\027") at ha_mroonga.cpp:7261
  #25 0x000055f8f5d11f9f in handler::ha_write_row (this=0x7f9044190fc0, buf=0x7f8f740309f0 "\376Fd\027") at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/handler.cc:6495
  #26 0x000055f8f5af4379 in write_record (thd=thd@entry=0x7f9044000c08, table=table@entry=0x7f9044195198, info=info@entry=0x7f92e02bdb80) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_insert.cc:1727
  #27 0x000055f8f5afaf49 in mysql_insert (thd=thd@entry=0x7f9044000c08, table_list=<optimized out>, fields=..., values_list=..., update_fields=..., update_values=..., duplic=<optimized out>, ignore=<optimized out>) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_insert.cc:1077
  #28 0x000055f8f5b25abf in mysql_execute_command (thd=<optimized out>) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_parse.cc:4505
  #29 0x000055f8f5b2a509 in mysql_parse (thd=0x7f9044000c08, rawbuf=<optimized out>, length=209, parser_state=0x7f92e02bf5c0, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_parse.cc:7855
  #30 0x000055f8f5b2c3a5 in dispatch_command (command=COM_QUERY, thd=0x7f9044000c08, packet=<optimized out>, packet_length=<optimized out>, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_class.h:1153
  #31 0x000055f8f5b2db02 in do_command (thd=0x7f9044000c08) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_parse.cc:1398
  #32 0x000055f8f5c08986 in do_handle_one_connection (connect=connect@entry=0x55f9243d8b38) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_connect.cc:1404
  #33 0x000055f8f5c08afd in handle_one_connection (arg=0x55f9243d8b38) at /srv/slapgrid/slappart15/srv/runner/instance/slappart7/tmp/shared/mariadb-10.3/59926e9bb7961f6ab1ae320e6286d63a/.build/mariadb-10.3.38/sql/sql_connect.cc:1309
  #34 0x00007f9b952dafa3 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
  #35 0x00007f9b9520b4cf in clone () from /lib/x86_64-linux-gnu/libc.so.6

Let's revert while we continue investigating

See merge request nexedi/slapos!1372

The instance-gitlab-test.cfg.in was removed.
We should test the cfg which used in production,
not a dedicated cfg for testing

See merge request nexedi/slapos!1368

Add missing libxcb to rpath

This reverts commit ca5ba490.

It's actually a good idea to update our pandas version (0.19.x is
already 7 years old, in one project we recently run into a bug of this
pandas version).

We only need to prepare erp5 with few changes so that it also support
those newer versions. This preperation was done in nexedi/erp5!1738.

/reviewed-on nexedi/slapos!1355

using ERP5: nexedi/erp5!1545

See merge request nexedi/slapos!1122

1) stack/erp5/zope-versions.cfg
2) stack/slapos.cfg
3) component/ZODB/buildout.cfg.

and remove stack/erp5/ztk-versions.cfg as we need only small part of it.

stack/slapos.cfg should be listed in the begining of software release extends list.

ERP5 now only supports WSGI

This needs a recent enough erp5, with the following commit:
zopewsgi: configure threads count and large_file_threshold with argparse