Automated tests [#3506687]

Problem/Motivation

Add automated tests

Proposed resolution

- Create the gitlab yaml
- Configure auth tokens for personal repo on Gitlab/Github on a public repo i.e. config_pr_tests
- Create the tests
- The tests will configure the module and push pull requests to the repos
- Check that the pull requests are created
- Visit the repo to check that the correct changes are pushed
- Delete branch and pr

Repos to be used for testing
https://gitlab.com/marcelovani/config_pr_automation/-/tree/b01
https://github.com/marcelovani/config_pr_automation

Issue fork config_pr-3506687

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3506687-automated-tests changes, plain diff MR !16 / changes, plain diff MR !14
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3506687-initiate-gitlabci changes, plain diff MR !15
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