Add support for using nightly release

[khrm]

This adds support using nightly release manifests for building operator. This is based on COMPONENT environment variable.

Changes

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
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• Run make test lint before submitting a PR
• Includes tests (if functionality changed/added)
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Release Notes

We can build operator locally for nightly manifest by using following command:
`COMPONENT=components.nightly.yaml  make  apply`

[khrm]

/hold
Still working on nightly Tekton Result release

[vdemeester]

Note: in theory, we could even not "require" an upstream component to publish a nightly, but building it ourselves (using ko or whatever).

[khrm]

/hold cancel

[jkandasa]

Thanks @khrm 🎉
cc @vdemeester @piyush-garg

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jkandasa

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[piyush-garg]

/lgtm