Fixed Issues in Apache HBase

Review the list of HBase issues that are resolved in Cloudera Runtime 7.1.8.

CDPD-34687: HBase multi-cluster client that relies on the existing HBase Replication functionality to provide an eventual consistent solution in cases of primary cluster down time, has been added to 7.1.8.

CDPD-22120: Added the possibility to load custom cost functions. Optional for StochasticLoadBalancer.