[WFLY-1796] simplify write connector attribute

For backwards compatibility, the connector attribute (used in the
messaging subsystem's connection-factory & pooled-connection-factory)
must be a map where the key is a connector name and the value is not
taken into account (in previous HornetQ versions, the value was the
backup's server connector).

This is a source of confusion when creating resources with connector:
users expect to pass a list of connectors and this fails as they must
pass a map with undefined values.

This corrector will replace a list with the map expected to populate the
model.
WFLY-1810 SFSB tx lock not released in exception was thrown in Synchronization callback
[WFLY-490] [WFLY-1818] Allow ModelControllerClient creator to disable JBOSS_LOCAL_USER SASL mechanism
WFLY-1654 Register WeldTerminalListener
[WFLY-490] Help ensure process lifecycle ops require write-runtime perms
[WFLY-490] SimpleResourceDefinition should allow null PathElement
[WFLY-490] [WFLY-1817] Ensure gc op requires write-runtime permissions
[WFLY-490] Basic permission and constraint classes
[WFLY-490] Use Authorizer in OperationContextImpl, get basic perm checks working, annotate a couple things as sensitive
[WFLY-490] Temp hack for reading operation-headers from HTTP GET
[WFLY-490] Add AccessConstraintDefinitions to attribute and operation definition and builders
[WFLY-490] Configure the sensitivity constraints, vault expressions sensitivity and application types
[WFLY-490] Filtered read-resource support
[WFLY-490] Don't expose addresses via wildcard requests
[WFLY-490] Better read attribute enforcement
[WFLY-490] write-attribute enforcement
[WFLY-490] [WFLY-1788] added a bunch of TODOs at questionable places in the code
[WFLY-490] added the first set of test cases

[WFLY-1788] Tests using multiple roles are currently @Ignored, as the feature is broken.
[WFLY-490] Define other core SensitivityClassifications; Apply the core sensitive target constraints
[WFLY-490] factor test utilities into a common RBAC test superclass