RBAC config for slave HCs unable to access master HC

The RBAC configuration is stored in domain.xml. A slave HC unable to contact the master may not have access to domain.xml content. Need to provide config options:

1) If the host is running with cached-dc set, is using the cached data allowed?

Default should be yes, and this may not be configurable at all in WF 8 (or perhaps ever). Use of --cached-dc on the command line in general implies that the local domain.xml content is authoritative.

2) The admin-only mode without --cached-dc. Configure whether the system should:

a) contact the master to pull down domain wide config, but not actually register as a member.

b) if a) isn't enabled or fails:

i) fail boot
ii) run with any authenticated user able to act as SuperUser.

The default would be b)ii) as this is compatible with previous releases.