XD-1266: Assume use of HttpClient for twitterstream

The existing DirectFieldAccessor workaround for setting connection
properties assumed the use of a SimpleClientHttpRequestFactory. If
Apache HttpClient is on the classpath, a different instance is
dynamically chosen. This commit adds httpclient explicitly and fixes
TwitterStreamChannelAdapter to work with the different request factory.
Cleanup explicit Redis queues in Test

- Cleanup redis queues after ModuleDeploymentTests methods
Add transport check in TestMessageBus injection

It looks like the static variable testMessageBus in
AbstractSingleNodeStreamDeploymentIntegrationTests(AbstractSNSDIT) gets
a value from previously loaded test class (ex: RabbitSNSDIT) and
thereby non-null check on TestMessageBus injection fails if the class
LocalSNSDIT is loaded after RabbitSNSDIT. Hence, added an additional
check to verify if the transport is local as it is LocalSNSDIT that
doesn't set the testMessageBus.
Fix basic_stream_tests.

Add database initialization which is no longer enabled by default.
XD-1271: Remove job options from the shell
XD-630: Uncomment all tests that actually work
Refactor unique name generation logic

- Changed the method name getStreamName()/getJobName() to read generateStreamName()/generateJobName()
- Refactored the methods
XD-1250 RabbitMessageBus Shutdown

Several issues resolved:

1. The message bus was using unnamed auto-delete queues for pub/sub.
      A connection glitch would cause such queues to be deleted and
      the container could not recover.
   - changed to use AnonymousQueue and configure the admin to redeclare
     the queue and binding when necessary.

2. The module-common context was never closed so the RabbitMessageBus
      containers would go into recovery mode; currently this is a hard-
      wired 15 second delay (3x5 seconds).
   - the ModuleDeployer is now a `DisposableBean` and destroys all
     deployed modules and the common module context.

3. Changed `RabbitSingleNodeStreamDeploymentIntegrationTests` to delete
      the deployment queues after all contexts are closed.