[SSSD] [sssd PR#274][opened] Merge sss_cache and sss_debuglevel into sssctl

[justin-stephenson]

   URL: https://github.com/SSSD/sssd/pull/274
Author: justin-stephenson
 Title: #274: Merge sss_cache and sss_debuglevel into sssctl
Action: opened

PR body:
"""
Move `sss_cache` into a new command **sssctl expire-cache** and `sss_debuglevel` into new
command **sssctl debug-level** for ticket https://pagure.io/SSSD/sssd/issue/3057

Shell redirect wrappers replace the `sss_{debuglevel,cache}` binaries and man pages
updated to point admins towards the new **sssctl** commands.
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/274/head:pr274
git checkout pr274