fail when service cannot be found by chkconfig
Merge pull request #2439 from jochu/service-chkconfig-fail

fail when service cannot be found by chkconfig
Mention of ansible-doc and man pages for modules.
Merge pull request #2447 from dorfsmay/20130318-ansible-doc

Mention of ansible-doc and man pages for modules.
Merge remote-tracking branch 'upstream/devel' into vol_os_detection