Add a waitAfterTagging config parameter

Our Jenkins pipeline gets activated upon pushing to the GIT repository and checks if the current commit has a release tag to decide if the build must produce an artifact.

Sometimes the commit to prepare for the next release gets pushed before the pipeline gets a chance to start, thus skipping the release process and forcing a rollback and restart.

With the introduction of a waitAfterTagging configuration property we can provide a 3-5sec delay to ensure the pipeline gets activated before the next commit gets pushed in.

If desireable I can provide a pull request for this: I really need it.