Add gottwald to admin and maintainers for capdo

I'm maintainer of CAPDO and also working for DO.

Author: gottwald

config/kubernetes-sigs/sig-cluster-lifecycle/teams.yaml

@@ -184,6 +184,7 @@ teams:
     - luxas
     - timoreimann
     - timothysc
+    - gottwald
     privacy: closed
     repos:
       cluster-api-provider-digitalocean: admin
@@ -194,6 +195,7 @@ teams:
     - MorrisLaw
     - timoreimann
     - timothysc
+    - gottwald
     privacy: closed
     repos:
       cluster-api-provider-digitalocean: write