Disable automatic builds on existing tags

[jaisonpjohn]

Another one, bear with me please.

Multi branch - Pipeline

Don't trigger automatic builds on existing tags please. Reason is, Usually we will use tags/release for doing the CD (Continuous deployment). If we create a Multi branch - Pipeline on a github repo which already have numerous tags/release, we should not automatically trigger a build on those tags/release because it will have unpredictable outcomes.

Can we have the automatic build reserved only for the event of tag created (at that moment) got for a past tags.

[KostyaSha]

Branch/PR trigger for classic jobs had skipFirstRun option.. Probably the same could be achieved for tags