INT-3152 Speed Up Integration Build Times

Add a `@Rule` to skip long-runing tests during normal builds.

Add the rule to long-running tests in gemfire, ip, jms, jmx.

Add an environment variable `RUN_LONG_INTEGRATION_TESTS`; when set
to true, all tests are run.

Set the environment variable to true on all nightly builds.

Build now runs in 13 minutes on my 3 year old laptop.