Release 3.0.0-rc4

Updated test fixtures, Modulefile, and README for release candidate 4

Change-Id: I0fe7332ac76b75238fe1bca7622878387540a813
Release 3.0.0

Updated Modulefile for release 3.0.0

Change-Id: I343fbab7d9c3b511206312ec3036dc6b2939503a
Merge branch 'stable/havana' of https://github.com/stackforge/puppet-swift into havana