use extraEnvVars to set __OW_ALLOW_CONCURRENT (#506)

diff --git a/helm/openwhisk/templates/invoker-pod.yaml b/helm/openwhisk/templates/invoker-pod.yaml
index 98355f6..5edf3af 100644
--- a/helm/openwhisk/templates/invoker-pod.yaml
+++ b/helm/openwhisk/templates/invoker-pod.yaml
@@ -118,7 +118,7 @@
           - name: "CONFIG_whisk_containerFactory_containerArgs_network"
             value: {{ .Values.invoker.containerFactory.networkConfig.name | quote }}
 
-          - name: "CONFIG_whisk_containerFactory_containerArgs_extraArgs_env_0"
+          - name: "CONFIG_whisk_containerFactory_containerArgs_extraEnvVars_0"
             value: "__OW_ALLOW_CONCURRENT={{ .Values.invoker.containerFactory.enableConcurrency }}"
 
           - name: "CONFIG_whisk_containerFactory_runtimesRegistry_url"
diff --git a/helm/openwhisk/values.yaml b/helm/openwhisk/values.yaml
index 7c14d7c..dfea9c5 100644
--- a/helm/openwhisk/values.yaml
+++ b/helm/openwhisk/values.yaml
@@ -129,9 +129,9 @@
     includeSystemTests: false
   versions:
     openwhisk:
-      buildDate: "2019-07-23-14:06:10Z"
-      buildNo: "20190723a"
-      gitTag: "4a09c73bb391fcc8b3cf0ecd76ac7abad7fe849d"
+      buildDate: "2019-08-07-11:22:17Z"
+      buildNo: "20190807a"
+      gitTag: "9bef49fcd47f7922e4226ff7a97385f1313f7d64"
     openwhiskCli:
       # more recent than 0.10.0 to pick up bug fix in commmit 457c17d
       tag: "457c17d"
@@ -155,7 +155,7 @@
 # Images used to run auxillary tasks/jobs
 utility:
   imageName: "openwhisk/ow-utils"
-  imageTag: "4a09c73"
+  imageTag: "9bef49f"
   imagePullPolicy: "IfNotPresent"
 
 # Docker registry
@@ -239,7 +239,7 @@
 # Controller configurations
 controller:
   imageName: "openwhisk/controller"
-  imageTag: "4a09c73"
+  imageTag: "9bef49f"
   imagePullPolicy: "IfNotPresent"
   replicaCount: 1
   restartPolicy: "Always"
@@ -251,7 +251,7 @@
 # Invoker configurations
 invoker:
   imageName: "openwhisk/invoker"
-  imageTag: "4a09c73"
+  imageTag: "9bef49f"
   imagePullPolicy: "IfNotPresent"
   restartPolicy: "Always"
   port: 8080