Add missing files for configuring metallb (k8s)

Change-Id: I72da0da890948b3a6ca1a4593dee0f40ef828c14
Signed-off-by: David Garcia <david.garcia@canonical.com>

installers/k8s/metallb/config.yaml

+#   Copyright 2020 Canonical Ltd.
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: metallb-system
+  name: config
+data:
+  config: |
+    address-pools:
+    - name: default
+      protocol: layer2
+      addresses:
+      - $METALLB_IP_RANGE

installers/k8s/metallb/metallb.yaml

+#   Copyright 2020 Canonical Ltd.
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: metallb-system
+  labels:
+    app: metallb
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  namespace: metallb-system
+  name: controller
+  labels:
+    app: metallb
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  namespace: metallb-system
+  name: speaker
+  labels:
+    app: metallb
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: metallb-system:controller
+  labels:
+    app: metallb
+rules:
+  - apiGroups: [""]
+    resources: ["services"]
+    verbs: ["get", "list", "watch", "update"]
+  - apiGroups: [""]
+    resources: ["services/status"]
+    verbs: ["update"]
+  - apiGroups: [""]
+    resources: ["events"]
+    verbs: ["create", "patch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: metallb-system:speaker
+  labels:
+    app: metallb
+rules:
+  - apiGroups: [""]
+    resources: ["services", "endpoints", "nodes"]
+    verbs: ["get", "list", "watch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  namespace: metallb-system
+  name: leader-election
+  labels:
+    app: metallb
+rules:
+  - apiGroups: [""]
+    resources: ["endpoints"]
+    resourceNames: ["metallb-speaker"]
+    verbs: ["get", "update"]
+  - apiGroups: [""]
+    resources: ["endpoints"]
+    verbs: ["create"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  namespace: metallb-system
+  name: config-watcher
+  labels:
+    app: metallb
+rules:
+  - apiGroups: [""]
+    resources: ["configmaps"]
+    verbs: ["get", "list", "watch"]
+  - apiGroups: [""]
+    resources: ["events"]
+    verbs: ["create"]
+---
+## Role bindings
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: metallb-system:controller
+  labels:
+    app: metallb
+subjects:
+  - kind: ServiceAccount
+    name: controller
+    namespace: metallb-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: metallb-system:controller
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: metallb-system:speaker
+  labels:
+    app: metallb
+subjects:
+  - kind: ServiceAccount
+    name: speaker
+    namespace: metallb-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: metallb-system:speaker
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  namespace: metallb-system
+  name: config-watcher
+  labels:
+    app: metallb
+subjects:
+  - kind: ServiceAccount
+    name: controller
+  - kind: ServiceAccount
+    name: speaker
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: config-watcher
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  namespace: metallb-system
+  name: leader-election
+  labels:
+    app: metallb
+subjects:
+  - kind: ServiceAccount
+    name: speaker
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: leader-election
+---
+apiVersion: apps/v1beta2
+kind: DaemonSet
+metadata:
+  namespace: metallb-system
+  name: speaker
+  labels:
+    app: metallb
+    component: speaker
+spec:
+  selector:
+    matchLabels:
+      app: metallb
+      component: speaker
+  template:
+    metadata:
+      labels:
+        app: metallb
+        component: speaker
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "7472"
+    spec:
+      serviceAccountName: speaker
+      terminationGracePeriodSeconds: 0
+      hostNetwork: true
+      containers:
+        - name: speaker
+          image: metallb/speaker:v0.6.1
+          imagePullPolicy: IfNotPresent
+          args:
+            - --port=7472
+            - --config=config
+          env:
+            - name: METALLB_NODE_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+          ports:
+            - name: monitoring
+              containerPort: 7472
+          resources:
+            limits:
+              cpu: 100m
+              memory: 100Mi
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+            capabilities:
+              drop:
+                - all
+              add:
+                - net_raw
+---
+apiVersion: apps/v1beta2
+kind: Deployment
+metadata:
+  namespace: metallb-system
+  name: controller
+  labels:
+    app: metallb
+    component: controller
+spec:
+  revisionHistoryLimit: 3
+  selector:
+    matchLabels:
+      app: metallb
+      component: controller
+  template:
+    metadata:
+      labels:
+        app: metallb
+        component: controller
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "7472"
+    spec:
+      serviceAccountName: controller
+      terminationGracePeriodSeconds: 0
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 65534 # nobody
+      containers:
+        - name: controller
+          image: metallb/controller:v0.6.1
+          imagePullPolicy: IfNotPresent
+          args:
+            - --port=7472
+            - --config=config
+          ports:
+            - name: monitoring
+              containerPort: 7472
+          resources:
+            limits:
+              cpu: 100m
+              memory: 100Mi
+
+          securityContext:
+            allowPrivilegeEscalation: false
+            capabilities:
+              drop:
+                - all
+            readOnlyRootFilesystem: true