Migration from Vault Mode

This feature adds the ability to convert standard vaults to container vaults and support mixed-mode operation, with some access pools operating in Container Mode while others operate in Vault Mode. Options are available during conversion to specify Container Mode preference whether to use "DNS-compliant" Container Mode or "Create only container vault" whether to transfer IP and quota from standard vault to the first container and whether to only restricted the bucket level configuration to the service APText.