kubelet: wait for network-online to start kubelet

[rphillips]

Fixes a race when the kubelet starts up to enumerate the hostname.

Ports over a change from the MCO.

ref: https://bugzilla.redhat.com/show_bug.cgi?id=1763700
ref: openshift/machine-config-operator#1206

holding until the MCO PR merges in.
/hold

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[abhinavdahiya]

How is this bug useful to the bootstrap kubelet service, we don't configure it to connect to any API.

[rphillips]

I am just thinking of parity with the MCO.

[openshift-ci-robot]

@rphillips: The following tests failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
ci/prow/e2e-aws	6c34db7	link	/test e2e-aws
ci/prow/e2e-aws-upgrade	6c34db7	link	/test e2e-aws-upgrade
ci/prow/e2e-aws-scaleup-rhel7	6c34db7	link	/test e2e-aws-scaleup-rhel7

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[cgwalters]

Yeah, I requested this just because in the past we've let the installer copy drift. But you're also right this particular change probably doesn't matter. So, shrug - no real strong opinion from me.

[rphillips]

Going to close this... We can reopen if we need to.