Set the correct version release in the OC binary

[codespearhead]

Set the correct version release in the OC binary.

Update SOURCE_GIT_TAG parsing logic to correctly identify the new tag format: openshift-clients-<version>. Previously, it incorrectly returned v4.2.0-alpha.0 for all releases.

Fixes #1688
Fixes #744
Fixes #740

[openshift-ci]

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[openshift-ci]

Hi @codespearhead. Thanks for your PR.

I'm waiting for a openshift member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[codespearhead]

/lifecycle frozen

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