Connect F4E gitlab to JADE

[dodu94]

Description

This PR allows jade to fetch also inputs from the F4E private GitLab in case an access token is provided in the enviromental variables config file.

Additional dependencies introduced.

• python-gitlab

Type of change

Please select what type of change this is.

• Bug fix (non-breaking change which fixes an issue)
• New benchmark
  • Non-breaking change which entirely uses exisiting classes, structure etc
  • Breaking change which has implemented new/modified classes etc
• New feature
  • Non-breaking change which adds functionality
  • Breaking change fix or feature that would cause existing functionality to not work as expected

Other changes

• This change requires a documentation update
• (If Benchmark) This requires additional data that can be obtained from:
  • Benchmark data 1
  • Benchamrk data 2

Testing

Suitable tests have been added for the CI suite

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• General testing
  • New and existing unit tests pass locally with my changes
  • Coverage is >80%

[dodu94]

Apparently the address of the F4E GitLab is not publicly available. If this situation is not solved, fetching cannot be tested in the GitHub CI and external users will not be able to access it without having a F4E VPN installed

[dodu94]

Update: Discussion with IT is ongoing to publish the website. Only drawback would be the necessity of 2FA for web access (but no impact on token-style access)