Shim build config to oc adm drain

[mfojtik]

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1525340

@deads2k @smarterclayton if this is reasonable, I will open the upstream PR.

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[soltysh]

lgtm

[soltysh]

Just make sure to open the upstream PR and replace those 0's in the commit title 😉

[openshift-ci-robot]

@mfojtik: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/openshift-jenkins/unit	9c500d7	link	/test unit
ci/openshift-jenkins/extended_conformance_gce	9c500d7	link	/test extended_conformance_gce
ci/openshift-jenkins/extended_conformance_install	9c500d7	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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[mfojtik]

/cherrypick release-3.8

[openshift-cherrypick-robot]

@mfojtik: once the present PR merges, I will cherry-pick it on top of release-3.8 in a new PR and assign it to you.

In response to this:

/cherrypick release-3.8

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[deads2k]

I think that @juanvallejo has a good explanation of the general challenge here: kubernetes/kubernetes#56864. In the general case, adding a factory method doesn't help.

[deads2k]

/hold

I think we should take kubernetes/kubernetes#56864 instead.

[mfojtik]

@deads2k agree, mea culpa that I was not looking for open PR's