1. Description

Support "multiple --hint capability" to specify multiple hints in "openstack server create" command

2. Use case

hard to figure out how to specify multiple hints in "openstack server create" command, unsure if command got executed since document do not state it.

~~~
https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/10/single/command-line_interface_reference_guide/index#openstackclient_subcommand_server_create

For the hints parameter,  it needs to mention multiple can be specified by repeating the --hint param

doc for nova boot does a slightly better job at it:

https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/10/single/command-line_interface_reference_guide/index#novaclient_subcommand_boot

however, both could be improved by explicitly mentioning multiple --hint capability
~~~

3. Upstream reference
        Bugzillas? No
        Blueprints? No
        Specs? No

4. RH bugzilla dependencies?
   No


5. Primary Red Hat contact:
   a. Name:  MD Sufiyan
   b. Email:   msufiyan