Add support to add labels and annotations to build pod

[wanjunlei]

Signed-off-by: wanjunlei [email protected]

Changes

This pr adds two fields labels and annotations to the Build and BuildRun CRD, the controller will add the labels and annotations to the taskrun, and eventually be added to the build pod.

Submitter Checklist

• [ ] Includes tests if functionality changed/was added
• [ ] Includes docs if changes are user-facing
• [ ] Set a kind label on this PR
• [ ] Release notes block has been filled in, or marked NONE

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Release Notes

Add support to add labels and annotations to build pod