[bugfix] update manpage for RHEL7 to support RHEL7 content

- Update man page for RHEL7
- Add rht-cpp and common profiles to manpage
- Add draft USGBC
- Fixes #283
Update RHEL7 manpage to use shipping profiles
Remove CPE variable from the example from the RHEL7 manpage
Merge pull request #287 from redhatrises/man_page_updates

[bugfix] update manpage for RHEL7 to support RHEL7 content