engine: Added tables for geo replication entities

Added sql script to create tables for geo-rep
related entities
Adding stored procs and database methods to
access and update georeplication entities

Change-Id: I231092cfc969030e144a7ddd08187ce1c47a29db
Bug-Url: https://bugzilla.redhat.com/show_bug.cgi?id=1125845
Signed-off-by: Sahina Bose <sabose@redhat.com>