AddToVotingConfigExclusions adds the given node names to exclude from voting config exclusions.

AllMastersCompatibleWithZen2 returns true if all master nodes in the given cluster can use zen2 APIs.

ClearVotingConfigExclusions resets the voting config exclusions if all excluded nodes are properly removed.

IsCompatibleWithZen2 returns true if the given StatefulSet is compatible with zen2.

RemoveZen2BootstrapAnnotation removes the initialMasterNodesAnnotation (if set) once zen2 is bootstrapped on the corresponding cluster.

SetupInitialMasterNodes sets the `cluster.initial_master_nodes` configuration setting on zen2-compatible master nodes from nodeSpecResources if necessary.