bump postgresql suggested version
fix Ec2LiveTest
add install postgresql repositories (yum or apt)
set up image chooser in JcloudsLocation even if a custom PortableTemplateBuilder is supplied (one which does not already have an image chooser)
Merge branch 'feature/postgresql' of https://github.com/andreaturli/brooklyn into misc

Conflicts:
	locations/jclouds/src/main/java/brooklyn/location/jclouds/JcloudsSshMachineLocation.java - OS details, both use template's OS, and be smart about detecting arch i386/x86_64
minor tweaks to make postgres 9.3 install in various locations
(more to do, but this gets us started!)
reformat postgres driver with correct spacing
Merge pull request #1141 from ahgittin/fix/postgres

fix postgres on machines where repos don't already have files installed