fix: update gha config, renovate and README.md

Signed-off-by: Devin Buhl <devin@buhl.casa>

template/vars/config.sample.yaml

@@ -47,12 +47,12 @@ bootstrap_service_cidr: 10.43.0.0/16
 # Node information
 bootstrap_hosts:
   # Use only 1, 3 or more odd master nodes, recommended is 3
-  master:
+  master: []
     # - name: kube0
     #   address:
     #   username:
     #   password:
-  worker:
+  worker: []
     # - name: kube1
     #   address:
     #   username: