component/re6stnet: add pim-dm multicast routing daemon

pim-dm is a python3 only egg and re6st is a python2 only egg.

Deploy pim-dm egg inside a totally separated buildout in python3. 

See merge request nexedi/slapos!1161

component/libpcap/buildout.cfg

+[buildout]
+extends =
+  ../bison/buildout.cfg
+  ../flex/buildout.cfg
+
+[libpcap]
+recipe = slapos.recipe.cmmi
+shared = true
+url = https://www.tcpdump.org/release/libpcap-1.10.1.tar.gz
+md5sum = 28e17495004036567c2cc884b51eba45
+environment =
+  PATH=${bison:location}/bin:${flex:location}/bin:%(PATH)s

component/python-pim-dm/buildout.cfg

+[buildout]
+extends =
+  ../libpcap/buildout.cfg
+  ../python-PyYAML/buildout.cfg
+
+parts =
+  eggs
+
+[python-pim-dm]
+recipe = zc.recipe.egg:custom
+egg = pim-dm
+include-dirs =
+  ${libpcap:location}/include
+library-dirs =
+  ${libpcap:location}/lib
+rpath =
+  ${libpcap:location}/lib/
+
+[eggs]
+recipe = zc.recipe.egg
+eggs =
+  igmp
+  ipaddress
+  netifaces
+  ${python-pim-dm:egg}
+  prettytable
+  py-mld
+  pyroute2
+  ${python-PyYAML:egg}

component/re6stnet/buildout.cfg

@@ -5,6 +5,8 @@ extends =
   ../geoip2/buildout.cfg
   ../openvpn/buildout.cfg
   ../python-cryptography/buildout.cfg
+  ../python-PyYAML/buildout.cfg
+  ../python-pim-dm/buildout.cfg
 
 parts =
   re6stnet
@@ -18,6 +20,7 @@ eggs =
   ${maxminddb-python:egg}
   ${python-cffi:egg}
   ${python-cryptography:egg}
+  ${python-PyYAML:egg}
   pyOpenSSL
   re6stnet[geoip]
 
@@ -26,4 +29,54 @@ eggs =
 initialization =
   import os
   os.environ['GEOIP2_MMDB'] = "${geolite2-country:location}/GeoLite2-Country.mmdb"
-  os.environ['PATH'] = "${openvpn:location}/sbin:${babeld:location}/bin:${openssl:location}/bin:${python:location}/bin:" + os.environ.get('PATH', '/usr/sbin:/usr/bin:/sbin:/bin')
+  os.environ['PATH'] = "${openvpn:location}/sbin:${babeld:location}/bin:${openssl:location}/bin:${python:location}/bin:${pim-dm-buildout:location}/bin:" + os.environ.get('PATH', '/usr/sbin:/usr/bin:/sbin:/bin')
+
+[pim-dm-buildout]
+recipe = slapos.recipe.build
+base = ${:_profile_base_location_}
+python = ${python3:executable}
+install =
+  import os
+  from zc.buildout.buildout import _isurl, urljoin
+  from slapos.rebootstrap.bootstrap import setup_script
+  base = options['base']
+  if _isurl(base):
+    extends = lambda path: urljoin(base + '/', path)
+  else:
+    extends = lambda path: os.path.realpath(os.path.join(base, path))
+
+  buildout_extra = []
+  buildout_section = self.buildout['buildout']
+  for option_name in ('download-cache', 'newest', 'shared-part-list'):
+    option_value = buildout_section.get(option_name)
+    if option_value:
+      buildout_extra.append('%s = %s' % (option_name, option_value))
+  os.mkdir(location)
+  with open(os.path.join(location, 'buildout.cfg'), 'w') as buildout_conf:
+    buildout_conf.write(
+      options['template'] % {
+        'extends': '\n  '.join(map(extends, (
+          '../../stack/slapos.cfg',
+          '../python-pim-dm/buildout.cfg',
+          ))),
+        'buildout': '\n'.join(buildout_extra),
+      }
+    )
+  buildout = os.path.join(location, 'bin', 'buildout')
+  os.mkdir(os.path.dirname(buildout))
+  setup_script(buildout, options['python'])
+  call((buildout, '-U'), cwd=location)
+template =
+  [buildout]
+  extends = %(extends)s
+  extends-cache = ${buildout:extends-cache}
+  extensions -= slapos.rebootstrap
+  %(buildout)s
+  [libpcap]
+  recipe =
+  location = ${libpcap:location}
+  environment =
+  [libyaml]
+  recipe =
+  location = ${libyaml:location}
+  pre-configure =

stack/slapos.cfg

@@ -163,6 +163,7 @@ gevent = 20.9.0
 geventmp = 0.0.1
 greenlet = 0.4.17
 idna = 2.9
+igmp = 1.0.4
 importlib-metadata = 1.7.0:whl
 inotify-simple = 1.1.1
 itsdangerous = 0.24
@@ -174,6 +175,7 @@ more-itertools = 5.0.0
 netaddr = 0.7.19
 pathlib2 = 2.3.5
 pbr = 2.0.0
+pim-dm = 1.4.0nxd001
 plone.recipe.command = 1.1
 prettytable = 0.7.2
 psutil = 5.8.0
@@ -181,6 +183,8 @@ pluggy = 0.13.1:whl
 py = 1.9.0:whl
 pyOpenSSL = 19.1.0
 pyparsing = 2.2.0
+py-mld = 1.0.3
+pyroute2 = 0.6.9
 pytz = 2016.10
 regex = 2020.9.27
 requests = 2.27.1