Add blue green deployment example app

blue-green-deploy/components/bg-deploy.jsonnet

@@ -0,0 +1,68 @@
+local env = std.extVar("__ksonnet/environments");
+local params = std.extVar("__ksonnet/params").components["bg-deploy"];
+[
+   {
+      "apiVersion": "v1",
+      "kind": "Service",
+      "metadata": {
+         "name": params.name,
+         "annotations": {
+            "argocd.argoproj.io/workflow-sync": "blue-green",
+            "argocd.argoproj.io/workflow-param.blue-green.service-name": params.name,
+            "argocd.argoproj.io/workflow-param.blue-green.new-service-manifest": "{{manifest}}",
+         },
+      },
+      "spec": {
+         "ports": [
+            {
+               "port": params.servicePort,
+               "targetPort": params.containerPort
+            }
+         ],
+         "selector": {
+            "app": params.name
+         },
+         "type": params.type
+      }
+   },
+   {
+      "apiVersion": "apps/v1beta2",
+      "kind": "Deployment",
+      "metadata": {
+         "name": params.name,
+         "annotations": {
+            "argocd.argoproj.io/workflow-sync": "blue-green",
+            "argocd.argoproj.io/workflow-param.blue-green.deployment-name": params.name,
+            "argocd.argoproj.io/workflow-param.blue-green.new-deployment-manifest": "{{manifest}}",
+         },
+      },
+      "spec": {
+         "replicas": params.replicas,
+         "selector": {
+            "matchLabels": {
+               "app": params.name
+            },
+         },
+         "template": {
+            "metadata": {
+               "labels": {
+                  "app": params.name
+               }
+            },
+            "spec": {
+               "containers": [
+                  {
+                     "image": params.image,
+                     "name": params.name,
+                     "ports": [
+                     {
+                        "containerPort": params.containerPort
+                     }
+                     ]
+                  }
+               ]
+            }
+         }
+      }
+   }
+]