Add groups cache timeout setting for Flotsam Groups back to OpenSimDefaults.ini

bin/OpenSimDefaults.ini

@@ -1186,6 +1186,11 @@
     ; This makes the Groups modules very chatty on the console.
     DebugEnabled     = false
 
+    ; Groups data is cached for this number of seconds before another request is made to the groups service
+    ; Set to 0 to disable the cache.
+    ; Default is 30 seconds
+    GroupsCacheTimeout = 30
+
     ; Specify which messaging module to use for groups messaging and if it's enabled
     ;MessagingModule = GroupsMessagingModule
     ;MessagingEnabled = true