Cherry-pick from release-0.3:

 *Updated How to Contribute
 *Renamed guide in pom.xml
 *Added new Linux services & MS SQL Cluster Service
 *Updated version to 0.3
 *Updated list of known issues
 *Corrected info about tagging images
 *Add Linux image build chapter
 *Added MS SQL Cluster enabling instructions

Change-Id: I714d6a45ec81cda5d9ec7822135a6e6c3028f671