feat(charts): Add helm charts for registry proxy

Author: kmala

charts/registry-proxy/Chart.yaml

@@ -0,0 +1,7 @@
+name: registry-proxy
+home: https://github.com/deis/registry-proxy
+version: <Will be populated by the ci before publishing the chart>
+description: Deis Workflow Registry Proxy.
+maintainers:
+  - name: Deis Team
+    email: engineering@deis.com

charts/registry-proxy/templates/registry-proxy-daemon.yaml

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+{{- if eq .Values.global.registry_location "on-cluster" }}
+apiVersion: extensions/v1beta1
+kind: DaemonSet
+metadata:
+  name: deis-registry-proxy
+  labels:
+    heritage: deis
+  annotations:
+    component.deis.io/version: {{ .Values.docker_tag }}
+spec:
+  selector:
+    matchLabels:
+      app: deis-registry-proxy
+      heritage: deis
+  template:
+    metadata:
+      name: deis-registry-proxy
+      labels:
+        heritage: deis
+        app: deis-registry-proxy
+    spec:
+      containers:
+      - name: deis-registry-proxy
+        image: quay.io/{{.Values.org}}/registry-proxy:{{.Values.docker_tag}}
+        imagePullPolicy: {{.Values.pull_policy}}
+{{- if or (.Values.limits_cpu) (.Values.limits_memory)}}
+        resources:
+          limits:
+{{- if (.Values.limits_cpu) }}
+            cpu: {{.Values.limits_cpu}}
+{{- end}}
+{{- if (.Values.limits_memory) }}
+            memory: {{.Values.limits_memory}}
+{{- end}}
+{{- end}}
+        env:
+        - name: REGISTRY_HOST
+          value: $(DEIS_REGISTRY_SERVICE_HOST)
+        - name: REGISTRY_PORT
+          value: $(DEIS_REGISTRY_SERVICE_PORT)
+        ports:
+        - containerPort: 80
+          hostPort: {{.Values.global.host_port}}
+{{- end }}

charts/registry-proxy/values.yaml

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+org: "deisci"
+pull_policy: "Always"
+docker_tag: canary
+limits_cpu: "100m"
+limits_memory: "50Mi"
+
+global:
+  # Set the location of Workflow's Registry
+  #
+  # Valid values are:
+  # - on-cluster: Run registry within the Kubernetes cluster
+  # - off-cluster: Use registry outside the Kubernetes cluster (example: dockerhub,quay.io,self-hosted)
+  # - ecr: Use Amazon's ECR
+  # - gcr: Use Google's GCR
+  registry_location: "on-cluster"
+  # The host port to which registry proxy binds to
+  host_port: 5555