updated bootstrapping procedure with more sane defaults

infrastructure/metallb-system/ipaddresspool.yaml

@@ -2,7 +2,6 @@ apiVersion: metallb.io/v1beta1
 kind: IPAddressPool
 metadata:
   name: default
-  namespace: metallb-system
 spec:
   addresses:
     - 192.168.3.0/24
@@ -10,5 +9,8 @@ spec:
 apiVersion: metallb.io/v1beta1
 kind: L2Advertisement
 metadata:
-  name: empty
-  namespace: metallb-system
+  name: default
+# selector is left empty on purpose to match all IPAddressPools
+# spec:
+#   ipAddressPools:
+#   - default