Add kubernetes in cluster readiness check

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "go.formatTool": "goimports"
+}

README.md

@@ -293,3 +293,18 @@ services:
           username: root
           password: 
 ```
+
+#### Kubernetes
+
+In cluster readiness probe.
+Connect to kube api from inside the cluster and monitor pod `ready` status condition
+
+```yaml
+...
+services: 
+  - ... 
+    checks:
+        - type: kubernetes
+          namespace: default
+          podName: test
+```

examples/nerve-config-kube.yml

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+
+services:
+  - checks:
+      - type: kubernetes
+        namespace: kube-system
+        podName: nerve-tests

go.mod

@@ -0,0 +1,44 @@
+module github.com/blablacar/go-nerve
+
+go 1.12
+
+require (
+	github.com/Unknwon/com v0.0.0-20190321035513-0fed4efef755 // indirect
+	github.com/ghodss/yaml v1.0.0
+	github.com/go-macaron/inject v0.0.0-20160627170012-d8a0b8677191 // indirect
+	github.com/go-sql-driver/mysql v1.4.1
+	github.com/gogo/protobuf v1.2.1 // indirect
+	github.com/golang/protobuf v1.3.1 // indirect
+	github.com/google/btree v1.0.0 // indirect
+	github.com/google/gofuzz v1.0.0 // indirect
+	github.com/googleapis/gnostic v0.2.0 // indirect
+	github.com/gregjones/httpcache v0.0.0-20190212212710-3befbb6ad0cc // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.6 // indirect
+	github.com/lib/pq v1.1.0
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/n0rad/go-erlog v0.0.0-20181111211834-b57266b774d5
+	github.com/onsi/gomega v1.4.2
+	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
+	github.com/pkg/errors v0.8.1 // indirect
+	github.com/prometheus/client_golang v0.9.2
+	github.com/samuel/go-zookeeper v0.0.0-20180130194729-c4fab1ac1bec
+	github.com/spf13/cobra v0.0.3
+	github.com/spf13/pflag v1.0.3 // indirect
+	github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94
+	github.com/stretchr/testify v1.3.0
+	github.com/tevino/tcp-shaker v0.0.0-20190306083616-9f5b7a96d888
+	golang.org/x/crypto v0.0.0-20190426145343-a29dc8fdc734 // indirect
+	golang.org/x/net v0.0.0-20190424112056-4829fb13d2c6 // indirect
+	golang.org/x/oauth2 v0.0.0-20190402181905-9f3314589c9a // indirect
+	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/ini.v1 v1.42.0 // indirect
+	gopkg.in/macaron.v1 v1.3.2
+	k8s.io/api v0.0.0-20190222213804-5cb15d344471
+	k8s.io/apimachinery v0.0.0-20190221213512-86fb29eff628
+	k8s.io/client-go v10.0.0+incompatible
+	k8s.io/klog v0.3.0 // indirect
+	sigs.k8s.io/yaml v1.1.0 // indirect
+)