Bump Hdr Histogram from 2.1.12 to 2.2.2#2078

mkars10 wants to merge 2 commits intoapache:4.xapache/cassandra-java-driver:4.xfrom

mkars10:hdr-histogram-2.2.2mkars10/cassandra-java-driver:hdr-histogram-2.2.2Copy head branch name to clipboard