Perform daily maintenance on monitoring table
(cherry picked from commit b86fedf1a331d991a95fc10d7e11c6e5e25b2011)
Postgres maintenance not supported in CFEngine v3.5.

Added class postgresql_maintenance_supported in def.cf to specify the version and type
(cherry picked from commit 4e07c8a51445ae94f60a87452fbddfd2ad1da8d0)

Conflicts:

	def.cf
Merge pull request #241 from awsiv/3.6.x

Perform daily maintenance on monitoring table