Add test cases for doing N, N-1, and N+1 code updates

Resolves openbmc/openbmc-test-automation#818

Change-Id: I4df01ecda6a20a9dc7ff07c59db4586e9bf8509a
Signed-off-by: Charles Paul Hofer <Charles.Hofer@ibm.com>
diff --git a/tools/generate_argumentfile.sh b/tools/generate_argumentfile.sh
index 81ac987..9b1f02c 100755
--- a/tools/generate_argumentfile.sh
+++ b/tools/generate_argumentfile.sh
@@ -30,6 +30,8 @@
 echo "--variable PNOR_IMAGE_FILE_PATH:$PNOR_IMAGE_FILE_PATH" >> $ARG_FILE
 echo "--variable BMC_IMAGE_FILE_PATH:$BMC_IMAGE_FILE_PATH" >> $ARG_FILE
 echo "--variable BAD_IMAGES_DIR_PATH:$BAD_IMAGES_DIR_PATH" >> $ARG_FILE
+echo "--variable N_MINUS_ONE_IMAGE_FILE_PATH:$N_MINUS_ONE_IMAGE_FILE_PATH" >> $ARG_FILE
+echo "--variable N_PLUS_ONE_IMAGE_FILE_PATH:$N_PLUS_ONE_IMAGE_FILE_PATH" >> $ARG_FILE
 echo "--variable SKIP_UPDATE_IF_ACTIVE:$SKIP_UPDATE_IF_ACTIVE" >> $ARG_FILE
 echo "--variable DELETE_OLD_PNOR_IMAGES:$DELETE_OLD_PNOR_IMAGES" >> $ARG_FILE
 echo "--variable DELETE_OLD_GUARD_FILE:$DELETE_OLD_GUARD_FILE" >> $ARG_FILE