Integrate gitlab-ci/deploy-exit-successful-if-up-to-date and 1 more

Commit: https://gitlab.com/SECO-Northern-Europe/yocto/infrastructure/gitlab-ci/-/commit/1aa51f580fdb33acf07dd460334f1cdd1b98fc4f

deploy_gitlab_ci: exit successfully if submodule already up to date

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Commit: https://gitlab.com/SECO-Northern-Europe/yocto/infrastructure/gitlab-ci/-/commit/9a496cdbec39ec466f5647067f3f1d9f42c9b7cb

Refactor 'check_pipeline_status' and add 'trigger_pipeline'

Rename 'check_pipeline_status' to 'mirror_pipeline_result' in order to better reflect what the function does.

Move determination of the pipeline out of this function to a new function 'get_pipelines' so that this can be tested separately and we can do different things depending on whether a pipeline exists or not.

Add function 'trigger_pipeline' to trigger a pipeline on a branch.

BCS 746-000635