Migrate machine api libraries to openshift/api

[kwoodson]

What this PR does / why we need it:
This PR aligns with the work to move machine api libraries to openshift/api. This work updates the machine-api-operator dependency, removes AWS and Azure dependencies, and simplifies the go.mod.

Special notes for your reviewer:
0 code changes introduced. Migrating libraries to openshift/api in order to clean up go.mod dependencies and align with the latest branches.

Release note:

Migrating machine api libraries to openshift/api

Follow up to openshift/cluster-api-provider-openstack#206

[mdbooth]

I can't remember what state the e2e tests are in, but basically as long as this compiles it

/lgtm

[iamemilio]

I can't remember what state the e2e tests are in, but basically as long as this compiles it

/lgtm

They do not work yet

[openshift-ci]

@kwoodson: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-openstack	62278ae	link	false	/test e2e-openstack

Full PR test history. Your PR dashboard.

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[mdbooth]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kwoodson, mdbooth

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