allow template labels to be parameterised

[jim-minter]

fixes #16223

docs: openshift/openshift-docs#5401

[jim-minter]

@bparees it just occurred to me, as this stands, this will allow label /values/ to be parameterised, but not label keys (or ${{json}}) - do you think either of these is warranted?

[bparees]

@bparees it just occurred to me, as this stands, this will allow label /values/ to be parameterised, but not label keys (or ${{json}}) - do you think either of these is warranted?

allowing label keys to be parameterized is warranted imho. Supporting ${{}} syntax is not needed since label keys+values can only be strings anyway(right?)

[jim-minter]

/retest

[jim-minter]

/retest

[bparees]

this will need a docs follow up too.

[jim-minter]

@bparees docs updated

[bparees]

lgtm but holding for 3.8 since we are past feature cut on 3.7.

[bparees]

/lgtm

[openshift-merge-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bparees, jim-minter

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[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[bparees]

/retest

[openshift-merge-robot]

/test all [submit-queue is verifying that this PR is safe to merge]

[openshift-ci-robot]

@jim-minter: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/openshift-jenkins/extended_conformance_install_update	6fd1097	link	/test extended_conformance_install_update
ci/openshift-jenkins/cmd	6fd1097	link	/test cmd
ci/openshift-jenkins/extended_conformance_gce	6fd1097	link	/test extended_conformance_gce
ci/openshift-jenkins/extended_conformance_install	6fd1097	link	/test extended_conformance_install

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[openshift-merge-robot]

Automatic merge from submit-queue (batch tested with PRs 16605, 17270).