CNES-Scan and CNES-CXX plugins are missing

[louisjdmartin]

Describe the bug

Since upgrade to SQ 9 we have some missing plugins, see #67

After analyze, we have side effects on reintegrate plugin as-is

1. Analyze is impossible, serveur returns this error on every try: {"errors":[{"msg":"For input string: \"AY3P71XQVPxrBVhsqr6R\""}]} (AY3... is the CNES Quality Gate ID)
2. On settings for cnes-scan for python, we declare an url to pylint-cnes-extension 1.0.0, we are on pylint 6.0.0 (pylintrc may be updated also).
3. /opt/sonar-scanner does not exists anymore, analysis may fail later also