WFLY-1801 Move remoting to use io subsystem for workers

- fix worker defaults
- preserve backward compatibilty
WFLY-1701 up porting patch to ignore new rar->RA dependency in deployer in case of appclient context (workaround for TCK) see https://bugzilla.redhat.com/show_bug.cgi?id=1056156
WFLY-1383 Disable pooling of stateless EJBs by default.
Fix up test to not restore a SLSB pool called 'undefined'
[WFLY-2656] Restore support for legacy clustered-cache-ref
[WFLY-561] Fix attributes in config used in mixed-domain tests
[WFLY-2476] Work around instability in 7.1.2 server restart op

Put the test that restarts the server last so any restart issues don't affect other tests.
The whole HC gets restarted at the end of the test class execution, so the server restart
really could be dropped, but I leave it in there so it is still available later.

There's some problem with the restart on 7.1.2, where despite the blocking=true flag the
next test seems to start executing in the middle of the restart.
WFLY-2761 Make it possible for static cdi-enabled modules to see the beans in top-level deployments
WFLY-2761 Testcase