[3.11] Hostname fixes backport

[michaelgugino]

Adding openshift_kubelet_name_override as a stand-in for
various places we will need to account for possible hostname
overrides.

(cherry picked from commit 1faee09)

Backports: #10334
Backports: #10341
Backports: #10343

[michaelgugino]

/retest

[michaelgugino]

/test e2e-gcp

[sdodson]

/lgtm

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: michaelgugino, sdodson

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[michaelgugino]

/cherrypick release-3.10

[openshift-cherrypick-robot]

@michaelgugino: 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.

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In response to this:

/cherrypick release-3.10

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[openshift-ci-robot]

@michaelgugino: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/prow/e2e-gcp-crio	ef259f7	link	/test e2e-gcp-crio

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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[openshift-cherrypick-robot]

@michaelgugino: #10356 failed to apply on top of branch "release-3.10":

error: Failed to merge in the changes.
Using index info to reconstruct a base tree...
M	images/installer/root/usr/local/bin/generate
M	inventory/hosts.example
M	playbooks/init/cluster_facts.yml
M	playbooks/init/validate_hostnames.yml
A	playbooks/openstack/resources.py
M	roles/lib_utils/action_plugins/sanity_checks.py
M	roles/openshift_openstack/tasks/node-configuration.yml
M	roles/openshift_openstack/templates/heat_stack_server.yaml.j2
Falling back to patching base and 3-way merge...
Auto-merging roles/openshift_openstack/templates/heat_stack_server.yaml.j2
Auto-merging roles/openshift_openstack/tasks/node-configuration.yml
Auto-merging roles/lib_utils/action_plugins/sanity_checks.py
CONFLICT (content): Merge conflict in roles/lib_utils/action_plugins/sanity_checks.py
Auto-merging playbooks/openstack/inventory.py
Auto-merging playbooks/init/validate_hostnames.yml
Auto-merging playbooks/init/cluster_facts.yml
Auto-merging inventory/hosts.example
Auto-merging images/installer/root/usr/local/bin/generate
Patch failed at 0001 Fail on openshift_hostname defined; add openshift_kubelet_name_override

Details

In response to this:

/cherrypick release-3.10

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.