CC-3099: Does Airtime upgrade work when the database username + password is changed from default?

-add propel files for 2.0 upgrade script

install_minimal/upgrades/airtime-2.0.0/propel/airtime/CcPerms.php

@@ -0,0 +1,18 @@
+<?php
+
+
+
+/**
+ * Skeleton subclass for representing a row from the 'cc_perms' table.
+ *
+ * 
+ *
+ * You should add additional methods to this class to meet the
+ * application requirements.  This class will only be generated as
+ * long as it does not already exist in the output directory.
+ *
+ * @package    propel.generator.airtime
+ */
+class CcPerms extends BaseCcPerms {
+
+} // CcPerms