added v2 cassandra store to prod sources
added v2 cassandra store to prod sources

Change-Id: I33405984b17bc86c602150ab2de0c038c8b1d378

wikimedia/maps-tilerator,kartotherian/tilerator,kartotherian/tilerator,kartotherian/tilerator,wikimedia/maps-tilerator,wikimedia/maps-tilerator