//
	// Within a multicluster mesh, each cluster must be (manually or auto)
	// configured to have the same Mesh ID value. If an existing cluster 'joins' a
	// multicluster mesh, it will need to be migrated to the new mesh ID. Details
	// of migration TBD, and it may be a disruptive operation to change the Mesh
	// ID post-install.
	//
	// If the mesh admin does not specify a value, Istio will use the value of the