Support CAPI paused annotation

[prksu]

This is a missing feature that we should add starting from v1alpha3 types.

I just tried to do bootstrap & pivot and found an issue that the DOCluster controller doesn't pause the reconciliation with the result that the controller creates a new DOCluster component eg: apiserver LB.

We need to support the cluster.x-k8s.io/paused annotation and Cluster.Spec.Paused field so cluster-api-do will work correctly when pivoting management cluster through clusterctl move.

ref: https://cluster-api.sigs.k8s.io/developer/providers/v1alpha2-to-v1alpha3.html#support-the-clusterx-k8siopaused-annotation-and-clusterspecpaused-field

/kind bug
/milestone v0.4.3

[prksu]

/assign

[prksu]

/close

[k8s-ci-robot]

@prksu: Closing this issue.

In response to this:

/close

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