Add another CentOS5 workaround

rc.local runs too late so instead of working arounds mount's -L
brokeness simply use the mount point the init script checks for antways.
Merge pull request #45 from agx/fixes/centos5

Add another CentOS5 workaround
Don't roll out the ssh keys, if we are a node.
Fix style.
Put imaginator tests in a seperate context.
Fix style.
Fix missing comma.
Fix keys again.

The priv key is mandatory on the head.
The pub key should be available on both hosts.
Merge pull request #46 from rwaffen/fix_branch

Fix branch