OF-1345 Can't create/reset passwords when using HybridAuthProvider

Although not in line with that what has been stated in this issue, this
fixes the possibility to change passwords in the GUI for those users
which are stored in the DefaultUserProvider.

src/java/org/jivesoftware/openfire/auth/HybridAuthProvider.java

@@ -216,7 +216,42 @@ public class HybridAuthProvider implements AuthProvider {
     public void setPassword(String username, String password)
             throws UserNotFoundException, UnsupportedOperationException
     {
-        throw new UnsupportedOperationException();
+      // Check overrides first.
+      if (primaryOverrides.contains(username.toLowerCase())) {
+          primaryProvider.setPassword(username, password);
+          return;
+      }
+      else if (secondaryOverrides.contains(username.toLowerCase())) {
+          secondaryProvider.setPassword(username, password);
+          return;
+      }
+      else if (tertiaryOverrides.contains(username.toLowerCase())) {
+          tertiaryProvider.setPassword(username, password);
+          return;
+      }
+
+      // Now perform normal
+      try {
+          primaryProvider.setPassword(username, password);
+      }
+      catch (UserNotFoundException | UnsupportedOperationException ue) {
+          if (secondaryProvider != null) {
+              try {
+                  secondaryProvider.setPassword(username, password);
+              }
+              catch (UserNotFoundException | UnsupportedOperationException ue2) {
+                  if (tertiaryProvider != null) {
+                      tertiaryProvider.setPassword(username, password);
+                  }
+                  else {
+                      throw ue2;
+                  }
+              }
+          }
+          else {
+              throw ue;
+          }
+      }
     }
 
     @Override