CBQE-1984: Add set of tunable feature tests for 3.0
Current conf files included are rebalance, swaprebalance, warmup, views,
castests.
Next commit will include heavier DGM runs and add additional tests with
views and xdcr.

Change-Id: I7b3d927a36d5423b77996daad5c0d8ef07753e82
Reviewed-on: http://review.couchbase.org/33829
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>
Tested-by: Ketaki Gangal <ketakigangal@gmail.com>