Update to CAPI v1beta2 Contract

[richardcase]

We need to update the provider to the v1beta2 contract before v1beta1 is dropped.

Tasks:

• Adopt v1beta2 internally (and CAPI v1.11+) - CAPMVM types willl adhere to v1beta1 contract
• Do release
• Create v1alpha2 API version
• Add v1beta2 fields
• Mark old fields as deprecated
• Add metav1.Conditions
• Do release

Ref: https://cluster-api.sigs.k8s.io/developer/providers/migrations/v1.10-to-v1.11#suggested-changes-for-providers