WFLY-2920 Fix bug in work cache manager in progress map
[JBQA-8853] improved test for [EAP6-63][WFLY-424] Domain Controller Discovery Improvements

AS test suite already contains tests of managament operations involving discovery options. This commit just changes behaviour during AS start to ensure that AS start without server and port configured in remote element (WFLY-2918) and with static-discovery option.
WFLY-2215 WorkManagerService does not start work manager
[WFLY-1904] Support deferring system property expressions until after vault is installed