WIP: test external cloud provider for AWS, Azure and OpenStack

[Fedosin]

For testing purposes only. Do not review.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

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

Test name	Commit	Details	Rerun command
ci/prow/verify	a390fd1	link	/test verify
ci/prow/unit	a390fd1	link	/test unit
ci/prow/e2e-aws-disruptive	a390fd1	link	/test e2e-aws-disruptive
ci/prow/e2e-aws-workers-rhel7	a390fd1	link	/test e2e-aws-workers-rhel7
ci/prow/e2e-aws-serial	a390fd1	link	/test e2e-aws-serial
ci/prow/e2e-aws	a390fd1	link	/test e2e-aws
ci/prow/okd-e2e-aws	a390fd1	link	/test okd-e2e-aws
ci/prow/e2e-ovn-step-registry	a390fd1	link	/test e2e-ovn-step-registry
ci/prow/e2e-aws-upgrade-single-node	a390fd1	link	/test e2e-aws-upgrade-single-node
ci/prow/e2e-metal-ipi	a390fd1	link	/test e2e-metal-ipi
ci/prow/e2e-vsphere-upgrade	a390fd1	link	/test e2e-vsphere-upgrade
ci/prow/e2e-agnostic-upgrade	a390fd1	link	/test e2e-agnostic-upgrade

Full PR test history. Your PR dashboard.

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