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191f9dd5ff
Automatic merge from submit-queue (batch tested with PRs 58480, 58549). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Use backup location to load cloud config for OpenStack **What this PR does / why we need it**: Since we are transitioning to external cloud provider, we need a way to use the existing cinder volume plugin (from kubelet). With external cloud manager kubelet will be run with --cloud=provider=external and no --cloud-config file will be in the command line. So we need a way to load the openstack config file from somewhere. Taking a cue from kubeadm, which currently is picking up "/etc/kubernetes/cloud-config" https://github.com/kubernetes/kubernetes/blob/master/cmd/kubeadm/app/phases/controlplane/manifests.go#L44 let's support the scenario where we fall back to this static location if there is no cloud provider specified in the command line. This has been tested with local-up-cluster using the following params: EXTERNAL_CLOUD_PROVIDER=true CLOUD_PROVIDER=openstack CLOUD_CONFIG=/etc/kubernetes/cloud-config **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes # **Special notes for your reviewer**: **Release note**: ```release-note NONE ```