[WFLY-3078] also marshal directory-grouping if no servers are configured
[WFLY-3094] Validate address-settings configuration

* check that if address-settings' expiry-address and dead-letter-address
  are defined, then there must be corresponding resources (either
  jms-queue, jms-topic, or core-queue) bound to them.
  If that's not the case, logs a warning that there me be unintended
  message loss.
* add 2 JMS Queue (ExpiryQueue and DLQ) to the full configuration to
  satistfy these constraints.

JIRA: https://issues.jboss.org/browse/WFLY-3094
Merge pull request #6016 from emuckenhuber/other

[WFLY-3078] also marshal directory-grouping if no servers are configured
WFLY-3060 - Rare KrbException: Request is a replay issue in negotiation tests
WFLY-2910 json.pretty on REST management has no effect
Minor - remove unnecessary dependency on Weld's internal class
[WFLY-3008] missing system property resolution for interface criteria
[WFLY-3000] set application/json as content-type
[WFLY-3008] fix rbac domain test configurations
[WFLY-3043] Cleanup messaging XML configuration

Remove elements from the messaging XML configuration that are defined
using the default values from the corresponding management model
attributes.

JIRA: https://issues.jboss.org/browse/WFLY-3043
[WFLY-3051] Add a dependency on 'javax.api' to the 'org.wildfly.extension.io' module.
Merge pull request #6015 from jmesnil/WFLY-3094_address-setting_validation

[WFLY-3094] Validate address-settings configuration