datacenter_attach_parser.add_argument('--vim-tenant-name', action='store', help="specify a datacenter tenant name.")
datacenter_attach_parser.add_argument("--user", action="store", help="user credentials for the datacenter")
datacenter_attach_parser.add_argument("--password", action="store", help="password credentials for the datacenter")
datacenter_attach_parser.add_argument('--vim-tenant-name', action='store', help="specify a datacenter tenant name.")
datacenter_attach_parser.add_argument("--user", action="store", help="user credentials for the datacenter")
datacenter_attach_parser.add_argument("--password", action="store", help="password credentials for the datacenter")