Description of problem:
Adding gpg-key to repo creation in hammer only has the option of passing in gpg-key-id and not gpg-key-name. This is causing failures in automation for creating repos with gpg-key-name.

Version-Release number of selected component (if applicable):
6.10_020

How reproducible:
100%

Steps to Reproduce:
1. Git a 6.10 satellite
2. Run hammer command: hammer repository create --help

Actual results:
Possible value(s): 'immediate', 'on_demand'
--gpg-key-id GPG_KEY_ID Id of the gpg key that will be assigned to the new repository
--http-proxy[-id] Name/id of a HTTP Proxy
--http-proxy-policy HTTP_PROXY_POLICY Policies for HTTP Proxy for content sync

Expected results:
There should be an option for gpg-key-name

Additional info:
Also running the command to create gives this error:

1. hammer repository create --gpg-key-name something
   Could not create the repository:
   Error: Unrecognised option '--gpg-key-name'.

See: 'hammer repository create --help'.