upgrade_oniro.py: create function structure

Signed-off-by: Davide Gardenal <davide.gardenal@huawei.com>

scripts/upgrade_oniro.py

@@ -85,5 +85,29 @@ def init_script_options():
     image = parsed_args["image"]
     conf_directory = parsed_args["conf_directory"]
 
+def upgrade_tool():
+    # TODO
+    return
+
+def perform_pre_upgrade_checks():
+    # TODO
+    return
+
+def backup_oniro():
+    # TODO
+    return
+
+def restore_oniro():
+    # TODO
+    return
+
+def upgrade_oniro():
+    # TODO
+    return
+
 if __name__ == "__main__":
     init_script_options()
+    upgrade_tool()
+    perform_pre_upgrade_checks()
+    backup_oniro()
+    upgrade_oniro()
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