tools bump: kind 0.9, kubectl 1.18, helm 3.2.4 (#643)

diff --git a/README.md b/README.md
index 6fc750a..21d3332 100644
--- a/README.md
+++ b/README.md
@@ -138,7 +138,7 @@
 deployment and management of applications on Kubernetes clusters.
 The OpenWhisk Helm chart requires the Helm 3.
 
-Our automated testing currently uses Helm v3.2.0
+Our automated testing currently uses Helm v3.2.4
 
 Follow the Helm [install instructions](https://github.com/kubernetes/helm)
 for your platform to install Helm v3.0.1 or newer.
diff --git a/docs/k8s-kind.md b/docs/k8s-kind.md
index a7ee381..3f2d1c9 100644
--- a/docs/k8s-kind.md
+++ b/docs/k8s-kind.md
@@ -36,7 +36,7 @@
 
 Download the latest stable release of `kind` for your platform from
 https://github.com/kubernetes-sigs/kind/releases. Our TravisCI testing
-currently uses kind v0.8.1 on an ubuntu 18.04 host.
+currently uses kind v0.9.0 on an ubuntu 18.04 host.
 
 ### Creating the Kubernetes Cluster
 
diff --git a/helm/openwhisk/README.md b/helm/openwhisk/README.md
index 1dab549..b45cb6f 100644
--- a/helm/openwhisk/README.md
+++ b/helm/openwhisk/README.md
@@ -57,7 +57,7 @@
 
 ## Prerequisites
 
-* Kubernetes 1.10 - 1.16.*
+* Kubernetes 1.14 - 1.18.*
 
 ### Image Policy Requirements
 
diff --git a/tools/travis/setup.sh b/tools/travis/setup.sh
index d97aa8d..1e2e868 100755
--- a/tools/travis/setup.sh
+++ b/tools/travis/setup.sh
@@ -18,10 +18,10 @@
 
 set -x
 
-HELM_VERSION=v3.2.0
+HELM_VERSION=v3.2.4
 # When changing KIND_VERSION, you must also update the case statement of KIND_NODE_TAG in start-kind.sh
-KIND_VERSION=v0.8.1
-KUBECTL_VERSION=v1.16.9
+KIND_VERSION=v0.9.0
+KUBECTL_VERSION=v1.18.8
 WSK_CLI_VERSION=latest
 
 # Download and install command line tools
diff --git a/tools/travis/start-kind.sh b/tools/travis/start-kind.sh
index 5dae1af..a3c1b54 100755
--- a/tools/travis/start-kind.sh
+++ b/tools/travis/start-kind.sh
@@ -30,11 +30,12 @@
 
 # Map from Kubernetes major versions to the kind node image tag
 case $TRAVIS_KUBE_VERSION in
-    v1.14) KIND_NODE_TAG=v1.14.10@sha256:6cd43ff41ae9f02bb46c8f455d5323819aec858b99534a290517ebc181b443c6 ;;
-    v1.15) KIND_NODE_TAG=v1.15.11@sha256:6cc31f3533deb138792db2c7d1ffc36f7456a06f1db5556ad3b6927641016f50 ;;
-    v1.16) KIND_NODE_TAG=v1.16.9@sha256:7175872357bc85847ec4b1aba46ed1d12fa054c83ac7a8a11f5c268957fd5765 ;;
-    v1.17) KIND_NODE_TAG=v1.17.5@sha256:ab3f9e6ec5ad8840eeb1f76c89bb7948c77bbf76bcebe1a8b59790b8ae9a283a ;;
-    v1.18) KIND_NODE_TAG=v1.18.2@sha256:7b27a6d0f2517ff88ba444025beae41491b016bc6af573ba467b70c5e8e0d85f ;;
+    v1.14) KIND_NODE_TAG=v1.14.10@sha256:ce4355398a704fca68006f8a29f37aafb49f8fc2f64ede3ccd0d9198da910146 ;;
+    v1.15) KIND_NODE_TAG=v1.15.12@sha256:d9b939055c1e852fe3d86955ee24976cab46cba518abcb8b13ba70917e6547a6 ;;
+    v1.16) KIND_NODE_TAG=v1.16.15@sha256:a89c771f7de234e6547d43695c7ab047809ffc71a0c3b65aa54eda051c45ed20 ;;
+    v1.17) KIND_NODE_TAG=v1.17.11@sha256:5240a7a2c34bf241afb54ac05669f8a46661912eab05705d660971eeb12f6555 ;;
+    v1.18) KIND_NODE_TAG=v1.18.8@sha256:f4bcc97a0ad6e7abaf3f643d890add7efe6ee4ab90baeb374b4f41a4c95567eb  ;;
+    v1.19) KIND_NODE_TAG=v1.19.1@sha256:98cf5288864662e37115e362b23e4369c8c4a408f99cbc06e58ac30ddc721600  ;;
     *) echo "Unsupported Kubernetes version $TRAVIS_KUBE_VERSION"; exit 1 ;;
 esac