Relax review requirements on cni-plugin/Dockerfile
The /cni-plugin directory has additional review requirements; however,
its Dockerfile changes each time `go.mod` is updated. It was not
intended to require this extra review on these routine changes.
This change updates CODEOWNERS to make all maintainers owners of
`cni-plugin/Dockerfile`.
@@ -16,3 +16,6 @@ SECURITY_AUDIT.pdf @olix0r
# Hema & Zahari understand the CNI best:
/charts/linkerd2-cni @hemakl @zaharidichev
/cni-plugin @hemakl @zaharidichev
+
+# The Dockerfile is changed with go.mod changes.
+/cni-plugin/Dockerfile @linkerd/maintainers
