XD-1249 All Shell Integration Tests run from Suite
XD-1254 - Moved container setup to @BeforeClass

XD-1254 Fixed typo in Redis....Tests

XD-1254 removed System.out.println()

XD-1254 cleanup per review
Add missing ClassRule TestSupport

Since the Redis/Rabbit SingleNodeIntegrationTests' startup() method
is changed to be static, we need to apply static @ClassRule to
check the TestSupport rule for Redis/Rabbit availability.

Also, the ShellCommandsTestSuite requires ClassRule as the
AbstractShellIntegrationTest has the RedisTestSupport
Prevent NPE if no db files are present
XD-1050: Allow plugins to provide Options Metadata
Use custom converter for MediaTypes
Apply to Job Plugins options
Fix JobPluginTests
Update per review + rename DefaultMOM