add basic helm chart

helm/nodejs/templates/NOTES.txt

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+The following service(s) have been created in your project: {{ .Values.name }}.
+
+For more information about using this template, including OpenShift considerations, see https://github.com/openshift/nodejs-ex/blob/master/README.md.

helm/nodejs/templates/buildconfig.yaml

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+kind: BuildConfig
+apiVersion: build.openshift.io/v1
+metadata:
+  name: {{ .Values.name | quote }}
+  annotations:
+    description: Defines how to build the application
+spec:
+  source:
+    type: Git
+    git:
+      uri: {{ .Values.source_repository_url | quote }}
+      ref: {{ .Values.source_repository_ref | quote }}
+    contextDir: {{ .Values.context_dir | quote }}
+  strategy:
+    type: Source
+    sourceStrategy:
+      from:
+        kind: ImageStreamTag
+        namespace: {{ .Values.namespace | quote }}
+        name: nodejs:6
+      env:
+      - name: NPM_MIRROR
+        value: {{ .Values.npm_mirror | quote }}
+  output:
+    to:
+      kind: ImageStreamTag
+      name: {{ print .Values.name ":latest" | quote }}
+  triggers:
+  - type: ImageChange
+  - type: ConfigChange
+  - type: GitHub
+    github:
+      secret: {{ .Values.github_webhook_secret | default (randAlphaNum 40) | quote }}
+  - type: Generic
+    generic:
+      secret: {{ .Values.generic_webhook_secret | default (randAlphaNum 40) | quote }}
+  postCommit:
+    script: npm test

helm/nodejs/templates/deploymentconfig.yaml

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+kind: DeploymentConfig
+apiVersion: apps.openshift.io/v1
+metadata:
+  name: {{ .Values.name | quote }}
+  annotations:
+    description: Defines how to deploy the application server
+    template.alpha.openshift.io/wait-for-ready: 'true'
+spec:
+  strategy:
+    type: Rolling
+  triggers:
+  - type: ImageChange
+    imageChangeParams:
+      automatic: true
+      containerNames:
+      - nodejs-example
+      from:
+        kind: ImageStreamTag
+        name: {{ print .Values.name ":latest" | quote }}
+  - type: ConfigChange
+  replicas: 1
+  selector:
+    name: {{ .Values.name | quote }}
+  template:
+    metadata:
+      name: {{ .Values.name | quote }}
+      labels:
+        name: {{ .Values.name | quote }}
+    spec:
+      containers:
+      - name: nodejs-example
+        image: " "
+        ports:
+        - containerPort: 8080
+        readinessProbe:
+          timeoutSeconds: 3
+          initialDelaySeconds: 3
+          httpGet:
+            path: "/"
+            port: 8080
+        livenessProbe:
+          timeoutSeconds: 3
+          initialDelaySeconds: 30
+          httpGet:
+            path: "/"
+            port: 8080
+        resources:
+          limits:
+            memory: {{ .Values.memory_limit | quote }}

helm/nodejs/templates/imagestream.yaml

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+kind: ImageStream
+apiVersion: image.openshift.io/v1
+metadata:
+  name: {{ .Values.name | quote }}
+  annotations:
+    description: Keeps track of changes in the application image

helm/nodejs/templates/route.yaml

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+kind: Route
+apiVersion: route.openshift.io/v1
+metadata:
+  name: {{ .Values.name | quote }}
+spec:
+  host: {{ .Values.application_domain | quote }}
+  to:
+    kind: Service
+    name: {{ .Values.name | quote }}

helm/nodejs/templates/service.yaml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: {{ .Values.name | quote }}
+  annotations:
+    description: Exposes and load balances the application pods
+spec:
+  ports:
+  - name: web
+    port: 8080
+    targetPort: 8080
+  selector:
+    name: {{ .Values.name | quote }}