We could use a wild card in Zuul project definitions to easily trigger jobs for a set of repositories. An example would be to update the Beta Cluster repos when a patch is merged.
- project: mediawiki/extensions/* postmerge: - beta-update-extension
The job would already get the ZUUL_PROJECT set to whatever project triggered it.
The wildcard should stop on / while a double wildcard to match subpaths as well.