Don't try to get service and to reconnect during server shutdown(HostControllerConnectionService is stopped)
[WFCORE-253] Enable the use of expressions for sasl-protocol and server-name.
[WFCORE-256] Remove comment saying Kerberos is only for HTTP.
[WFCORE-257] Remove TODO comment to add access constraints as these attributes are already contained within resources flagged as being MANAGEMENT_INTERFACES.
[WFCORE-259] Update realm readiness checking to be based on having at least one mechanism ready for challenge/response style authentication.
Merge pull request #335 from darranl/WFCORE-257

[WFCORE-257] Remove TODO comment to add access constraints
Merge pull request #333 from darranl/WFCORE-256

[WFCORE-256] Remove comment saying Kerberos is only for HTTP.
Merge pull request #332 from darranl/WFCORE-253

[WFCORE-253] Enable the use of expressions for sasl-protocol and server-name
[WFCORE-210] make deployment scanner treat listFiles() returning null correctly as error case.
[WFCORE-60] Log boot capability validation issues
If -secmgr is passed as a server argument, it should enable the security manager.
[WFCORE-258] Import services from the WildFly Security Manager to allow jboss-modules to install the security manager.
[WFCORE-258] Add a property to pass server arguments to a test domain server.
[WFCORE-258] Add ability to enable the security manager with the security.manager system property.
Add the ability to force begin requests to the ControlPoint

This allows threads that are alredy running to use an
executor service or asyn method without it being rejected.
[WFCORE-213] :  Clean unreferenced items from the content repository

Now we are using ContentReference to track contents in the content repository.
Now we are tracking references to overlays.
Trying to use server group definition for domain mode.
Simplifying ContentReference
WFCORE-211: Fixing overzealous cleaning of HC content.
[WFCORE-178] :  ContentRepositoryImpl should not call File.deleteOnExit when deleting content.

Using the new Path API instead of File.
Cleaning empty old directories.
[WFCORE-260] Minor corrections for use with the IBM JVM.
https://issues.jboss.org/browse/WFCORE-262 use PlaceholderResource for host-environment and module-loading resources
Merge pull request #284 from ehsavoie/WFCORE-213

[WFCORE-213] :  Clean unreferenced items from the content repository