[release-4.4] Bug 1810133: connect to etcd using IPs

[openshift-cherrypick-robot]

This is an automated cherry-pick of #787

/assign hexfusion

[openshift-ci-robot]

@openshift-cherrypick-robot: This pull request references Bugzilla bug 1810133, which is invalid:

• expected the bug to target the "4.4.0" release, but it targets "4.5.0" instead
• expected the bug to be in one of the following states: NEW, ASSIGNED, ON_DEV, POST, POST, but it is ON_QA instead
• expected Bugzilla bug 1810133 to depend on a bug targeting the "4.5.0" release and in one of the following states: MODIFIED, ON_QA, VERIFIED, RELEASE_PENDING, CLOSED (ERRATA), but no dependents were found

Comment /bugzilla refresh to re-evaluate validity if changes to the Bugzilla bug are made, or edit the title of this pull request to link to a different bug.

In response to this:

[release-4.4] Bug 1810133: connect to etcd using IPs

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[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[hexfusion]

@deads2k we need this right?

[hexfusion]

/hold
for further conv.

[mandre]

I believe this is needed, at least for OpenStack:

https://bugzilla.redhat.com/show_bug.cgi?id=1811530

[cybertron]

Not having this is also breaking 4.4 on baremetal.

[sanchezl]

Replaced by manual cherry #791