Possibility to define nodeSelector for hawkular-metrics-schema job

[jmartisk]

see https://bugzilla.redhat.com/show_bug.cgi?id=1633506
@rubenvp8510 please take a look

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[papr-bot]

Can one of the admins verify this patch?
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[vrutkovs]

/ok-to-test

[rubenvp8510]

LGTM

[jmartisk]

/retest

[sdodson]

/close
no further updates to 3.10

[openshift-ci-robot]

@sdodson: Closed this PR.

In response to this:

/close
no further updates to 3.10

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