[go] Make netstack team owners

The netstack team is the remaining team using this repo, therefore make
them owners.

Change-Id: Icd9510737f9f2aae00868fc9f2228feacaeef04f
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/go/+/949356
Fuchsia-Auto-Submit: Aidan Wolter <awolter@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Reviewed-by: Bruno Dal Bo <brunodalbo@google.com>
diff --git a/OWNERS b/OWNERS
index 157381a..058d6c3 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,3 +1,3 @@
-maruel@google.com
+include /src/connectivity/network/OWNERS
 
 # COMPONENT: Toolchain>Go