Skip commit pipeline wait when pushing into the merge request.

When it pushes a commit to the remote fork, is waits to know the pipeline generated by this commit. This is useful in the testing pipeline, but it's an issue for the verification pipeline generated by the merge request. This pipeline was generated in the past, but not with the current configuration. The uprev procedure, after this push, creates or reuses an existing merge request and adds a note to it. The verification pipeline wasn't the one this push got.