Run zookeeper tests if localhost has a compat. zookeeper server

If a local zookeeper server is running then using that
zookeeper server we are able to run the zookeeper tests,
so instead of always turning these tests off; only turn
them off if no zookeeper server is found.

Change-Id: I27bbc67b4f2d03a4469882fdc3b8015324ad7e3b
Merge "Run zookeeper tests if localhost has a compat. zookeeper server"