upgrade_oniro: convert required options

Convert required options to positional arguments.
Required options are not a good idea because it can be
confusing for the user have an option (that should be
optional) required for running the script.

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

scripts/upgrade_oniro/upgrade_oniro.py

@@ -59,9 +59,9 @@ def init_script_options():
     parser = argparse.ArgumentParser(description=script_description)
 
     # TODO a choice could be added in the version by checking all the tags of Oniro
-    parser.add_argument("-tv", "--target-version", type=str, required=True,
+    parser.add_argument("target-version", type=str,
                         help="Specify the target version of Oniro you want to upgrade to")
-    parser.add_argument("-d", "--build-directory", type=pathlib.Path, required=True,
+    parser.add_argument("build-directory", type=pathlib.Path,
                         help="Path to the build directory you want to use (can be non-existent)")
     # TODO a choice could be added in the machine
     parser.add_argument("-m", "--machine", type=str, default="qemux86-64",
@@ -79,8 +79,8 @@ def init_script_options():
 
     parsed_args = vars(parser.parse_args())
     global target_version, build_directory, machine, flavour, image, conf_directory
-    target_version = parsed_args["target_version"]
-    build_directory = parsed_args["build_directory"]
+    target_version = parsed_args["target-version"]
+    build_directory = parsed_args["build-directory"]
     machine = parsed_args["machine"]
     flavour = parsed_args["flavour"]
     image = parsed_args["image"]