(antu) fix name of alloy ipaddresspool

(cherry picked from commit 36a9dfb)

Author: jhoblitt

fleet/lib/metallb-conf/overlays/antu/ipaddresspool-alloy.yaml

@@ -2,7 +2,7 @@
 apiVersion: metallb.io/v1beta1
 kind: IPAddressPool
 metadata:
-  name: ingress
+  name: alloy
   namespace: metallb-system
 spec:
   addresses:
@@ -12,10 +12,10 @@ spec:
 apiVersion: metallb.io/v1beta1
 kind: L2Advertisement
 metadata:
-  name: ingress
+  name: alloy
   namespace: metallb-system
 spec:
   ipAddressPools:
-    - ingress
+    - alloy
   interfaces:
     - br2131