Added syslog support.
Added if def flags to logpath and logappend.
prevent contradictory keys at the same time

`nojournal` and `journal` cannot be enabled at the same time otherwise
the mongodb server won't start.

closes #96
Merge pull request #99 from pkilambi/master

Add a wrapper class for mongodb_replset so that its usable by hiera/ENC based deployments.
Merge pull request #97 from enovance/bug/96/goneri

prevent contradictory keys at the same time
Merge pull request #95 from actionjack/syslog-support

Added syslog support.
changed - to = for versioned install

documented here http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/
apt-get install mongodb-10gen=2.2.3
Merge pull request #106 from marengaz/master

changed - to = for versioned install