HBASE-8431 Fix missing license headers

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1471823 13f79535-47bb-0310-9956-ffa450edef68
HBASE-8421 hbase-0.95.0 tgz does not include lib/junit*.jar

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1475629 13f79535-47bb-0310-9956-ffa450edef68