Write library code that maps Jenkins jobs from building to testing

Generating the test jobs will probably require to write some more code in our pythonlib, at least to plug Jenkins to Redmine and get the branch ticket status, as stated in the blueprint

Parent Task: #5288 (closed)

Related issues

Blocked by #10117 (closed)
Blocks #10119 (closed)

Original created by @bertagaz on 10118 (Redmine)

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