specifiy nagios packages for SUSE

(cherry picked from commit 6830f5c742bb4896dc88f25bc93bd24f269c9949)
making it run on SUSE

(cherry picked from commit 4096c003275697db317401ab10606cd723498a3c and
83351e70ecb772aaa17541999086c0095ec283d0)
fix logical error: replace user with group

(cherry picked from commit 2cfc15845fa13c20f5b25578a2e7c1ccf6c48c4f)
fix vhost conf location

(cherry picked from commits 1a93d8c3df9a0d4bb972902eba0a74ea56344331 and
b4c7f69dd7db748108c00e209e24a961479488b2, with additional fix for non-SUSE case)
fix configs for suse

(cherry picked from commit 83351e70ecb772aaa17541999086c0095ec283d0)
Merge pull request #54 from vuntz/suse-work

https://github.com/crowbar/barclamp-nagios/pull/54

Merged by devtool for cloudsleuth