This contains external min code, that isnt so complaint with JSL tests

     It is not required to a major test on full scenario to test load parameters from text area, neither 2 tests since it cover both cases as before in a much simpler way.

   Replace tv4 by cfworker json schema and ref-parser

    It was replaced

   As exposed by Romain, `parseFromString` does not throw any error if the XML parsing fails. Instead, you have to manually check if there is a `parsererror` element inside the returned document.

   See: https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#error_handling

   This don't remove jQuery completly, but it allow us to clean up the remaing part

   It is a useless block

   Replace tv4 by cfworker-jsonschema in order to support more recent schemas.
   Use ref-parser rather them custom expandSchema to build a expanded json schema.

    cfworker json schema was built from https://github.com/cfworker/cfworker/tree/main/packages/json-schema source code.

   Allow the default sample use Additional Properties for now, a more restricted version of it can be included on another file.

  This trigger validator to display error messages.

  This change isn't ideal, but this is minimal before a major refactoring

   Click only works when you click on buttons, while change quite often calls getContent/checkValidity, causing the this test to be more stable.

  Add samples for required on editor parameter (for tests)

   The errors should be properly displayed.

   This may contains extremely simple with 1 field of each type for make test parameter easier to be written.

   This makes tests much easier to be written, for while asserting the result as a simple hashed string.

   Also include header link to return

See merge request !439

Fixup of 89863d6c

For links like this:

$ ls -l /dev/disk/by-path/pci-0000:42:00.0-nvme-1
lrwxrwxrwx 1 root root 13 Oct 25 15:19 /dev/disk/by-path/pci-0000:42:00.0-nvme-1 -> ../../nvme7n1

os.readlink() returns "../../nvme7n1" while we want "/dev/nvme7n1".

libmvec ( https://sourceware.org/glibc/wiki/libmvec ) is part of
libc.

$ dpkg -S /lib/x86_64-linux-gnu/libmvec-2.24.so
libc6:amd64: /lib/x86_64-linux-gnu/libmvec-2.24.so

## before

```console
$ slapos service list
List of services:
erp5 /srv/slapgrid/slappart15/srv/project/slapos/software/erp5/software.cfg
slapos-sr-testing /srv/slapgrid/slappart15/srv/project/slapos/software/slapos-sr-testing/software.cfg
slapos-testing /srv/slapgrid/slappart15/srv/project/slapos/software/slapos-testing/software.cfg
hugo /srv/slapgrid/slappart15/srv/project/slapos/software/hugo/software.cfg
metabase /srv/slapgrid/slappart15/srv/project/slapos/software/metabase/software.cfg
dufs /srv/slapgrid/slappart15/srv/project/slapos/software/webdav/software.cfg
```

```console
$ slapos service info slapos-sr-testing
Software Release URL: /srv/slapgrid/slappart15/srv/project/slapos/software/slapos-sr-testing/software.cfg
Instance state: busy
Instance parameters:
{}
Connection parameters:
("<?xml version='1.0' encoding='utf-8'?>\n"
'<instance>\n'
'  <parameter '
'id="environment-script">/srv/slapgrid/slappart15/srv/runner/instance/slappart7/etc/slapos-local-development-environment.sh</parameter>\n'
```

## after

```console
$ slapos service list
{
  "dufs": "/srv/slapgrid/slappart15/srv/project/slapos/software/webdav/software.cfg",
  "erp5": "/srv/slapgrid/slappart15/srv/project/slapos/software/erp5/software.cfg",
  "hugo": "/srv/slapgrid/slappart15/srv/project/slapos/software/hugo/software.cfg",
  "metabase": "/srv/slapgrid/slappart15/srv/project/slapos/software/metabase/software.cfg",
  "slapos-sr-testing": "/srv/slapgrid/slappart15/srv/project/slapos/software/slapos-sr-testing/software.cfg",
  "slapos-testing": "/srv/slapgrid/slappart15/srv/project/slapos/software/slapos-testing/software.cfg"
}
```
```console
$ slapos service info slapos-sr-testing
{
  "software-url": "/srv/slapgrid/slappart15/srv/project/slapos/software/slapos-sr-testing/software.cfg",
  "instance-state": "busy",
  "instance-parameters": {},
  "connection-parameters": {
    "environment-script": "/srv/slapgrid/slappart15/srv/runner/instance/slappart7/etc/slapos-local-development-environment.sh"
  }
}
```


See merge request nexedi/slapos.core!441

because json output is different on python2 and python3 and cli is only
used on python2, we don't test the exact output in python2.

before:

    $ slapos service info slapos-sr-testing
    Software Release URL: /srv/slapgrid/slappart15/srv/project/slapos/software/slapos-sr-testing/software.cfg
    Instance state: busy
    Instance parameters:
    {}
    Connection parameters:
    ("<?xml version='1.0' encoding='utf-8'?>\n"
     '<instance>\n'
     '  <parameter '
     'id="environment-script">/srv/slapgrid/slappart15/srv/runner/instance/slappart7/etc/slapos-local-development-environment.sh</parameter>\n'

after:

    $ slapos service info slapos-sr-testing
    Software Release URL: /srv/slapgrid/slappart15/srv/project/slapos/software/slapos-sr-testing/software.cfg
    Instance state: busy
    Instance parameters:
    {}
    Connection parameters:
    {'environment-script': '/srv/slapgrid/slappart15/srv/runner/instance/slappart7/etc/slapos-local-development-environment.sh'}

This is particularly needed for old OS with python2: very old versions of
pip are trying to install latest version of eggs no matter their python2
compatibility whereas pip 20 is making sure to install only python2
compatible eggs.