MetalLB: update to v0.12.1 (#8593)

Signed-off-by: Maciej Wereski <m.wereski@partner.samsung.com>

inventory/sample/group_vars/k8s_cluster/addons.yml

@@ -185,7 +185,7 @@ metallb_speaker_enabled: true
 #     operator: "Equal"
 #     value: ""
 #     effect: "NoSchedule"
-# metallb_version: v0.11.0
+# metallb_version: v0.12.1
 # metallb_protocol: "layer2"
 # metallb_port: "7472"
 # metallb_memberlist_port: "7946"

roles/kubernetes-apps/metallb/defaults/main.yml

 ---
 metallb_enabled: false
-metallb_version: v0.11.0
+metallb_version: v0.12.1
 metallb_log_level: info
 metallb_protocol: "layer2"
 metallb_port: "7472"

roles/kubernetes-apps/metallb/templates/metallb.yml.j2

@@ -11,7 +11,6 @@ metadata:
   labels:
     app: metallb
   name: controller
-  namespace: metallb-system
 spec:
   allowPrivilegeEscalation: false
   allowedCapabilities: []
@@ -51,7 +50,6 @@ metadata:
   labels:
     app: metallb
   name: speaker
-  namespace: metallb-system
 spec:
   allowPrivilegeEscalation: false
   allowedCapabilities: