cli: vulnerability alias to vulnerability list

Running pro vulnerability is now an alias for running pro vulnerability
list

uaclient/cli/vulnerability/__init__.py

@@ -1,24 +1,57 @@
 from uaclient import messages
-from uaclient.cli.commands import ProCommand
+from uaclient.cli.commands import ProArgument, ProArgumentGroup, ProCommand
 from uaclient.cli.parser import HelpCategory
-from uaclient.cli.vulnerability.list import list_subcommand
+from uaclient.cli.vulnerability.list import action_list, list_subcommand
 from uaclient.cli.vulnerability.show import show_subcommand
 from uaclient.cli.vulnerability.update import update_subcommand
 
-
-def action_vulnerability(args, *, cfg, **kwargs):
-    # Avoiding a circular import
-    from uaclient.cli import get_parser
-
-    get_parser().print_help_for_command("vulnerability")
-
-
 vulnerability_command = ProCommand(
     "vulnerability",
     help=messages.CLI_ROOT_VULNERABILITY,
     description=messages.CLI_VULNERABILITY_DESC,
     help_category=HelpCategory.SECURITY,
     preserve_description=True,
-    action=action_vulnerability,
+    action=action_list,
     subcommands=[show_subcommand, update_subcommand, list_subcommand],
+    argument_groups=[
+        ProArgumentGroup(
+            arguments=[
+                ProArgument(
+                    "--data-file",
+                    help=messages.CLI_VULNERABILITY_DATA_FILE,
+                    action="store",
+                ),
+                ProArgument(
+                    "--all",
+                    help=messages.CLI_VULNERABILITY_LIST_ALL,
+                    action="store_true",
+                ),
+                ProArgument(
+                    "--usns",
+                    help=messages.CLI_VULNERABILITY_LIST_USNS,
+                    action="store_true",
+                ),
+                ProArgument(
+                    "--unfixable",
+                    help=messages.CLI_VULNERABILITY_LIST_UNFIXABLE,
+                    action="store_true",
+                ),
+                ProArgument(
+                    "--manifest-file",
+                    help=messages.CLI_VULNERABILITY_LIST_MANIFEST_FILE,
+                    action="store",
+                ),
+                ProArgument(
+                    "--series",
+                    help=messages.CLI_VULNERABILITY_LIST_SERIES,
+                    action="store",
+                ),
+                ProArgument(
+                    "--update",
+                    help=messages.CLI_VULNERABILITY_UPDATE,
+                    action="store_true",
+                ),
+            ]
+        )
+    ],
 )

uaclient/messages/__init__.py

@@ -1216,7 +1216,7 @@ class TxtColor:
 CLI_VULNERABILITY_DESC = t.gettext(
     """\
 Allow users to better visualize the vulnerability issues that affects
-the system."""
+the system. By default, this command will execute pro vulnerability list"""
 )
 
 CLI_VULNERABILITY_DATA_FILE = t.gettext(