rename collectinfoTests in CollectinfoTests

Change-Id: I2a1dddc4ab640db389a86d3c6e9e1f164642d2be
Reviewed-on: http://review.couchbase.org/30260
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>