Merge pull request #3 from DavidS/master

Implement hostkey exchange
Disabling automatic hostkey exchange, by default.
Enable server to manage ssh keys
Support (custom) key comments
Fixing fileperms of ssh keys
Differentiating betw. host and user keys
Fixing syntax error
Merge branch 'keyGeneration' of https://github.com/Freeaqingme/puppet-openssh into Freeaqingme-keyGeneration
Update template syntax for 3.2