Fix V3 API server extension point exception propagation

Adds the propagate_map_exception parameter to extension
manager initialisation in the servers plugin so extension
points for the V3 API propagate exceptions rather than
supress them. The parameter was missing from some of the
extension point managers.

Also adds a missing V3 API personality test which exposed
the problem with exceptions not being correctly propagated.

Very minor spelling fix to one of the tests

Change-Id: I53fa680cfab9219442610a5dceeb35b150314f6f
Closes-Bug: 1224293
Merge "Fix V3 API server extension point exception propagation"