Fix issue with metrics undefined l_kubelet_node_name

[jcpowermac]

Switch l_init_fact_hosts from oo_masters_to_config to oo_nodes_to_config

Bug 1720466 - https://bugzilla.redhat.com/show_bug.cgi?id=1720466

[ewolinetz]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ewolinetz, jcpowermac

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[jcpowermac]

Thanks @ewolinetz

[jcpowermac]

/cherrypick release-3.10

[openshift-cherrypick-robot]

@jcpowermac: once the present PR merges, I will cherry-pick it on top of release-3.10 in a new PR and assign it to you.

In response to this:

/cherrypick release-3.10

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[openshift-cherrypick-robot]

@jcpowermac: new pull request created: #11700

In response to this:

/cherrypick release-3.10

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