Added owner file

Fixed #114
This is a required step to get this done: kubernetes/org#1934

Author: Gianluca Arbezzano

OWNERS

@@ -0,0 +1,13 @@
+# See the OWNERS docs: https://git.k8s.io/community/contributors/guide/owners.md
+
+approvers:
+  - sig-cluster-lifecycle-leads
+  - cluster-api-admins
+  - cluster-api-maintainers
+  - cluster-api-packet-maintainers
+
+reviewers:
+  - cluster-api-packet-maintainers
+
+labels:
+  - sig/cluster-lifecycle