Normalize command to loosen the command keywords.
Normalize command to loosen the command keywords.

- Allow either '-' or '_' in bot commands.
- Allow either plural or singular for commands.

skateman/miq_bot,carbonin/miq_bot,bdunne/miq_bot,imtayadeway/miq_bot,romanblanco/miq_bot,bdunne/miq_bot,skateman/miq_bot,ManageIQ/miq_bot,jrafanie/miq_bot,ManageIQ/miq_bot,ManageIQ/miq_bot,carbonin/miq_bot,Fryguy/miq_bot,romanblanco/miq_bot,bdunne/miq_bot,romanblanco/miq_bot,jrafanie/miq_bot,ManageIQ/miq_bot,skateman/miq_bot,imtayadeway/miq_bot,Fryguy/miq_bot,carbonin/miq_bot,imtayadeway/miq_bot,jrafanie/miq_bot