Unlike other cluster-api providers CAPO doesn't support `providerStatus` field, which makes it problematic to monitor the instance status.

We need to close this gap and `providerStatus` to CAPO.

Example of AWS CAP: https://github.com/openshift/cluster-api-provider-aws/blob/master/pkg/apis/awsprovider/v1beta1/awsproviderstatus_types.go#L24-L41

Example of Azure CAP: https://github.com/openshift/cluster-api-provider-azure/blob/master/pkg/apis/azureprovider/v1beta1/azuremachineproviderstatus_types.go#L26-L44