CassandraNodeIntegrationTest: make less brittle

- set jmxPort/rmiRegistryPort with "+" so if previous test didn't
  terminate properly and is still consuming that port then this 
  test can still pass.
Improve msg in EntityTestUtils.assertAttributeEqualsEventually
Add perf logging for sshj
Fix JmxSupport.getMachine, where multiple locations
TomcatAutoScalerPolicyTest: code tidy
Merge pull request #1251 from aledsage/fix/integration-tests-20140313

Fix/integration tests 20140313