Remove HBase-specific configuration from YarnMiniClusterTestBase
Don't require --zkhosts argument

Don't require --zkhosts argument since applications may not necessarily
require a ZooKeeper cluster
Create base test for HBase and Accumulo that includes ZooKeeper

Remove ZooKeeper from YarnMiniClusterTestBase and create a new test base
that includes ZooKeeper. This allows providers for other applications
that do not require ZK to be able to test using YarnMiniClusterTestBase
without pulling in HBase test jars for MiniZooKeeperCluster.
Merge pull request #18 from charlessimpson/remove-hbase-from-yarn-mini-cluster-base

Remove hbase from yarn mini cluster base