"server create" accepts undocumented --key argument

[Julie Pichon]

Some users are reporting confusion that setting the keypair with --key in "openstack server create" works, even though it should result an argument error according to the help documentation:

$ openstack help server create
usage: openstack server create [-h] [-f {json,shell,table,value,yaml}]
                               [-c COLUMN] [--max-width <integer>]
                               [--fit-width] [--print-empty] [--noindent]
                               [--prefix PREFIX]
                               (--image <image> | --volume <volume>) --flavor
                               <flavor> [--security-group <security-group>]
                               [--key-name <key-name>]
                               [--property <key=value>]
                               [--file <dest-filename=source-filename>]
                               [--user-data <user-data>]
                               [--availability-zone <zone-name>]
                               [--block-device-mapping <dev-name=mapping>]
                               [--nic <net-id=net-uuid,v4-fixed-ip=ip-addr,v6-fixed-ip=ip-addr,port-id=port-uuid,auto,none>]
                               [--network <network>] [--port <port>]
                               [--hint <key=value>]
                               [--config-drive <config-drive-volume>|True]
                               [--min <count>] [--max <count>] [--wait]
                               <server-name>

Despite this using the following works and sets the ke ycorrectly:
$ openstack server create --image cirros --flavor m1.tiny --key test cirrostest

From my understanding, the source of confusion is that when debugging an issue with server creation, the user notices that --key wasn't an option and thought this was the source of the problem, when it was actually fine. It sounds like either adding --key as a documented option in the --help, or removing the option altogether would help to alleviate the confusion.

[Praveen N (praveenn)]

This seems to be valid.
Also noticed, this holds similar with "openstack server create --security" instead of --security-group parameter.