Use kind to reproduce issue sorintlab#678

Dockerfile

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+FROM golang:1.13 as builder
+
+WORKDIR /workdir
+ADD . /workdir
+RUN /workdir/build
+
+
+FROM alpine
+
+COPY --from=builder /workdir/bin /bin

test-kubernetes/Makefile

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+#!/usr/bin/env make
+KUBECONFIG := $(shell kind get kubeconfig-path --name="kind")
+
+prepare:
+	kind create cluster --config kind-config.yml
+
+test:
+	#docker build -t sorintlab/stolon:master-pg10 ..
+	#kind load docker-image sorintlab/stolon:master-pg10
+	KUBECONFIG=$(KUBECONFIG) kubectl apply -f k8s/
+	#stolonctl init --cluster-name kube-stolon --store-backend kubernetes --kube-resource-kind configmap
+
+teardown:
+	kind delete cluster

test-kubernetes/k8s/role-binding.yaml

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+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: RoleBinding
+metadata:
+  name: stolon
+  namespace: default
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: stolon
+subjects:
+- kind: ServiceAccount
+  name: default
+  namespace: default

test-kubernetes/k8s/role.yaml

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+# This is an example and generic rbac role definition for stolon. It could be
+# fine tuned and split per component.
+# The required permission per component should be:
+# keeper/proxy/sentinel: update their own pod annotations
+# sentinel/stolonctl: get, create, update configmaps
+# sentinel/stolonctl: list components pods
+# sentinel/stolonctl: get components pods annotations
+
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: Role
+metadata:
+  name: stolon
+  namespace: default
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  - configmaps
+  - events
+  verbs:
+  - "*"

test-kubernetes/k8s/stolon-sentinel.yaml

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+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: stolon-sentinel
+spec:
+  replicas: 2
+  template:
+    metadata:
+      labels:
+        component: stolon-sentinel
+        stolon-cluster: kube-stolon
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/port: "8080"
+    spec:
+      containers:
+      - name: stolon-sentinel
+        image: sorintlab/stolon:master-pg10
+        command:
+          - "/bin/bash"
+          - "-ec"
+          - |
+            exec gosu stolon stolon-sentinel
+        env:
+          - name: POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name
+          - name: STSENTINEL_CLUSTER_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.labels['stolon-cluster']
+          - name: STSENTINEL_STORE_BACKEND
+            value: "kubernetes"
+          - name: STSENTINEL_KUBE_RESOURCE_KIND
+            value: "configmap"
+          - name: STSENTINEL_METRICS_LISTEN_ADDRESS
+            value: "0.0.0.0:8080"
+          ## Uncomment this to enable debug logs
+          #- name: STSENTINEL_DEBUG
+          #  value: "true"
+        ports:
+          - containerPort: 8080
+      enableServiceLinks: false

test-kubernetes/kind-config.yml

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+kind: Cluster
+apiVersion: kind.sigs.k8s.io/v1alpha3
+nodes:
+- role: control-plane
+  image: kindest/node:v1.13.10