Changed return_plug_vars to look for AUTOGUI_ vars

Change-Id: Ie22370d92678268001e4bc705d062418fe04140c
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/lib/gen_plug_in_utils.py b/lib/gen_plug_in_utils.py
index 685474c..4c378fc 100755
--- a/lib/gen_plug_in_utils.py
+++ b/lib/gen_plug_in_utils.py
@@ -52,7 +52,7 @@
     """
 
     plug_in_package_name = get_plug_in_package_name(case="upper")
-    regex = "^(AUTOBOOT|" + plug_in_package_name + ")_"
+    regex = "^(AUTOBOOT|AUTOGUI|" + plug_in_package_name + ")_"
 
     # Set a default for nickname.
     if os.environ.get("AUTOBOOT_OPENBMC_NICKNAME", "") == "":