add man-pages and mlocate plus update relevant db
remove cron-related packages and add rspec

We don't want users trying to add cron or at jobs in devenv.
We cannot simply remove cronie and kin because mlocate
depends on those rpms for installation.

CCERef#:
CCE-4324-0
CCE-4304-2, CCE-3833-1, CCE-3604-6, CCE-3626-9, CCE-4022-0
CCE-3851-3, CCE-3481-9, CCE-4322-4, CCE-4203-6, CCE-4379-4
CCE-4054-3, CCE-4441-2, CCE-4250-7, CCE-4331-5, CCE-4106-1
CCE-4450-3, CCE-4388-5, CCE-3983-4, CCE-4380-2, CCE-4212-7,
CCE-4251-5