Switch biocache-backend to cassandra3
Switch biocache-backend to cassandra3

This is the development situation (although jenkins may not need to be present on each of the new cassandra3 nodes)

Signed-off-by: Peter Ansell <aaf1ec639befe0a570b950d5d6cbd0c6638a063e@yahoo.com>

AtlasOfLivingAustralia/ala-install,AtlasOfLivingAustralia/ala-install,sadeghim/ala-install,sadeghim/ala-install,AtlasOfLivingAustralia/ala-install,djtfmartin/ala-install,sadeghim/ala-install,djtfmartin/ala-install,sadeghim/ala-install,djtfmartin/ala-install,AtlasOfLivingAustralia/ala-install,djtfmartin/ala-install,AtlasOfLivingAustralia/ala-install