Ceph MON Daemon management

def make(parser):
    """
    Ceph MON Daemon management
    """
    parser.formatter_class = ToggleRawTextHelpFormatter

    mon_parser = parser.add_subparsers(dest='subcommand')
    mon_parser.required = True

    mon_add = mon_parser.add_parser(
        'add',
        help=('R|Add a monitor to an existing cluster:\n'
              '\tceph-deploy mon add node1\n'
              'Or:\n'
              '\tceph-deploy mon add --address 192.168.1.10 node1\n'
              'If the section for the monitor exists and defines a `mon addr` that\n'
              'will be used, otherwise it will fallback by resolving the hostname to an\n'
              'IP. If `--address` is used it will override all other options.')
    )
    mon_add.add_argument(
        '--address',
        nargs='?',
    )
    mon_add.add_argument(
        'mon',
        nargs=1,
    )

    mon_create = mon_parser.add_parser(
        'create',
        help=('R|Deploy monitors by specifying them like:\n'
              '\tceph-deploy mon create node1 node2 node3\n'
              'If no hosts are passed it will default to use the\n'
              '`mon initial members` defined in the configuration.')
    )
    mon_create.add_argument(
        '--keyrings',
        nargs='?',
        help='concatenate multiple keyrings to be seeded on new monitors',
    )
    mon_create.add_argument(
        'mon',
        nargs='*',
    )

    mon_create_initial = mon_parser.add_parser(
        'create-initial',
        help=('Will deploy for monitors defined in `mon initial members`, '
              'wait until they form quorum and then gatherkeys, reporting '
              'the monitor status along the process. If monitors don\'t form '
              'quorum the command will eventually time out.')
    )
    mon_create_initial.add_argument(
        '--keyrings',
        nargs='?',
        help='concatenate multiple keyrings to be seeded on new monitors',
    )

    mon_destroy = mon_parser.add_parser(
        'destroy',
        help='Completely remove Ceph MON from remote host(s)'
    )
    mon_destroy.add_argument(
        'mon',
        nargs='+',
    )

    parser.set_defaults(
        func=mon,
    )