Add some basic RefControl tests for delegated ownership

While trying to understand what was wrong in issue 672 I started
to write up some unit tests for RefControl.  These don't give us
a whole lot of code coverage here, but its a simple start that
we can build on later.

Change-Id: Ib216a3d911c8447004528074a000e9424bcd711d
Signed-off-by: Shawn O. Pearce <sop@google.com>

gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectState.java

@@ -97,6 +97,10 @@ public class ProjectState {
     return inheritedRights;
   }
 
+  void setInheritedRights(Collection<RefRight> all) {
+    inheritedRights = all;
+  }
+
   private Collection<RefRight> computeInheritedRights() {
     if (isSpecialWildProject()) {
       return Collections.emptyList();