install kustomize (#1415)

images/linux/scripts/installers/kubernetes-tools.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 ################################################################################
 ##  File:  kubernetes-tools.sh
-##  Desc:  Installs kubectl, helm
+##  Desc:  Installs kubectl, helm, kustomize
 ################################################################################
 
 # Source the helpers for use with the script
@@ -23,6 +23,8 @@ curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bas
 curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
 sudo install minikube-linux-amd64 /usr/local/bin/minikube
 
+# Install kustomize
+sudo snap install kustomize
 
 # Run tests to determine that the software installed as expected
 echo "Testing to make sure that script performed as expected, and basic scenarios work"
@@ -43,9 +45,17 @@ if ! command -v minikube; then
     exit 1
 fi
 
+echo "Testing to make sure that kustomize was installed"
+if ! command -v kustomize; then
+    echo "kustomize was not installed"
+    exit 1
+fi
+
 # Document what was added to the image
 echo "Lastly, documenting what we added to the metadata file"
 DocumentInstalledItem "kubectl ($(kubectl version --client --short |& head -n 1))"
 DocumentInstalledItem "helm ($(helm version --short |& head -n 1))"
 # minikube version output already has word minikube in it. example minikube version: v1.9.2
 DocumentInstalledItem "$(minikube version --short)"
+# kustomize version output has "{} in it". example {kustomize/v3.8.1  2020-07-16T00:58:46Z  }
+DocumentInstalledItem "kustomize ($(kustomize version --short))"