Hammer CLI

Description of problem:
Upon os creation we refer to an entity as '--description' and then upon os update/info/deletion we refer to the very same entity as '--title'

Version-Release number of selected component (if applicable):
Sat6.3.0 Snap6

Steps to Reproduce:
1. # hammer os create --name RedHat --description 'RHEL Server 7.3' --major 7 --minor 3 --media 'Internal RHEL'

2. # hammer os update --title 'RHEL Server 7.3' --media 'Internal RHEL'

3. # hammer os info --title 'RHEL Server 7.3'

4. # hammer os delete --title 'RHEL Server 7.3'

Actual results:
create expects --description VS. update/info/delete expect --title

Expected results:
all subcommands expects the same (preferably --title as --description is only one exception to the rule)

1. Keep --title everywhere, no --description
2. Update command would need to have --new-title