allow patching configapi using oc patch

[deads2k]

Fixes upstream patch and scheme registration to allow oc patch --local -f openshift.local.config/master/master-config.yaml --patch="{\"etcdConfig\": {\"address\": \"${API_HOST}:${ETCD_PORT}\"}}" --loglevel=8 -o yaml

@soltysh @juanvallejo

I think the upstream is out of date
/hold

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: deads2k

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[deads2k]

/hold cancel

now in sync with upstream. Also did not add the scheme to oc since all our patches can be done as json patches.

@juanvallejo try basing your fix on this.
@soltysh if it works, let's be nice and announce deprecation of that experimental command.

[juanvallejo]

@deads2k

@juanvallejo try basing your fix on this.

#20665

[deads2k]

/retest

[deads2k]

pick merged

[deads2k]

/test extended_conformance_install