HBASE-12196 SSH should retry in case failed to assign regions
HBASE-12199 Make TestAtomicOperation and TestEncodedSeekers faster

Signed-off-by: Elliott Clark <eclark@apache.org>
Basic travis and circle support

	Mark tests as flakey
	Setup auto-retry for flakeyTests
	Add retryrunner annotation
testClusterStatus can be flakey. Try to make it's test runs idempotent