Story (Required)

Upstream issue: https://github.com/tektoncd/pipeline/issues/2933

Adding the requests and limits needs to be defined from config map. User can change those default values if needed.

defining static approach PR created and closed: https://github.com/tektoncd/pipeline/pull/4552#issuecomment-1096770270

Done Checklist

• Code is completed, reviewed, documented and checked in
• Unit and integration test automation have been delivered and running cleanly in continuous integration/staging/canary environment
• Continuous Delivery pipeline(s) is able to proceed with new code included
• Customer facing documentation, API docs etc. are produced/updated, reviewed and published
• Acceptance criteria are met