MB-100 fix ClusterAuthURL so it won't complain if the input is a HTTP URL string Otherwise, GsiClient fails to initialize when running under cbq-engine since the cluster address is in the form "http://localhost:9000" when passing into cbq-engine
MB-100 fix ClusterAuthURL so it won't complain if the input is a HTTP URL string
Otherwise, GsiClient fails to initialize when running under cbq-engine since
the cluster address is in the form "http://localhost:9000" when passing into
cbq-engine

Change-Id: I2917b40963b7e7620c8347173ff41c5ef4f21f28

jchris/indexing,jchris/indexing,jchris/indexing,jchris/indexing