Don't declare Package[libapache2-mod-passenger] in puppetmaster

This is already included via modules/apache/manifests/mod.pp thanks
to Apache tidying.

Change-Id: I3d7d4a4c1caf7ac1392244273c0de2b2c777379e
Merge "Don't declare Package[libapache2-mod-passenger] in puppetmaster" into production