Merge pull request #3 from kemani/Ossec.fixes

Ossec.fixes
Bugfix: Changed version check in too many places, reverted changes for checking normal icinga version
Merge remote-tracking branch 'origin/version-0.2.9' into version-0.2.9
Bugfix: Removed duplicated entries of DB mirror
Added support for ssh key forwarding while using sudo su
Merge pull request #67 from kribor/version-0.2.9

Code review: Arlukin