HBASE-9255: TestAsyncProcess#testErrorsServers is flaky on suse linux

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1515031 13f79535-47bb-0310-9956-ffa450edef68
HBASE-9257: TestAsyncProcess#testFailAndSuccess fails sometime due to a race condition

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1515075 13f79535-47bb-0310-9956-ffa450edef68