apiextensions release v0.3.10

Changed

• Fix cluster scope for ETCDBackup CRD.
• Graduate CertConfig CRDs to v1.
• Graduate ETCDBackup CRDs to v1.
• Graduate Ignition CRDs to v1.
• Graduate Release CRDs to v1.
• Drop ReleaseCycle CRD.
• Master field in AWSCluster is being deprecated and made optional
• InstanceType in AWSControlplane is made optional
• Update AWSCluster docs.