Fix updateCfg for null scope, it is considered Global

Author: sudo87

server/src/main/java/com/cloud/configuration/ConfigurationManagerImpl.java

@@ -978,7 +978,7 @@ public Configuration updateConfiguration(final UpdateCfgCmd cmd) throws InvalidP
             return _configDao.findByName(name);
         }
 
-        ConfigKey.Scope scope = ConfigKey.Scope.Global;
+        ConfigKey.Scope scope = null;
         Long id = null;
         int paramCountCheck = 0;
 
@@ -1224,7 +1224,7 @@ public Pair<Configuration, String> resetConfiguration(final ResetCfgCmd cmd) thr
 
     private String getConfigurationValueInScope(ConfigurationVO config, String name, ConfigKey.Scope scope, Long id) {
         String configValue;
-        if (ConfigKey.Scope.Global.equals(scope)) {
+        if (scope == null || ConfigKey.Scope.Global.equals(scope)) {
             configValue = config.getValue();
         } else {
             ConfigKey<?> configKey = _configDepot.get(name);