cmd: do not require userns for "version"

Closes: https://github.com/containers/podman/issues/17657

[NO NEW TESTS NEEDED]

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

cmd/podman/system/version.go

@@ -22,6 +22,9 @@ var (
 		Short:             "Display the Podman version information",
 		RunE:              version,
 		ValidArgsFunction: completion.AutocompleteNone,
+		Annotations: map[string]string{
+			registry.ParentNSRequired: "",
+		},
 	}
 	versionFormat string
 )

pkg/rootless/rootless_linux.c

@@ -386,6 +386,7 @@ can_use_shortcut (char **argv)
 
       if (strcmp (argv[argc], "mount") == 0
           || strcmp (argv[argc], "machine") == 0
+          || strcmp (argv[argc], "version") == 0
           || strcmp (argv[argc], "context") == 0
           || strcmp (argv[argc], "search") == 0
           || (strcmp (argv[argc], "system") == 0 && argv[argc+1] && strcmp (argv[argc+1], "service") != 0))