[COOK-3717] Support apt.postgresql.org version specific packages.
[COOK-3717] Don't rely on meta-packages to install the right packages version on Debian/Ubuntu
[COOK-3717] Update PGDG yum repository data and add version 9.3
[COOK-3717] Add debian-7.1.0 platform to kitchen
[COOK-3717] Test PGDG repositories with PostgreSQL version 9.3