Update k8s repository and add kubectl tool

repositories/k8s.yaml

@@ -2,6 +2,29 @@ name: k8s
 description: Kubernetes-related tools
 maintainer: Piotr Icikowski
 contents:
+  - name: kubectl
+    description: The Kubernetes command-line tool which allows you to run commands against Kubernetes clusters
+    newest_version_check:
+      - curl -Ls https://dl.k8s.io/release/stable.txt | sed 's/v//'
+    current_version_check:
+      - kubectl version -o json --client | jq '.clientVersion.gitVersion' -r | sed 's/v//'
+    install_scenario:
+      - wget -q -L O ${TEMP}/kubectl "https://dl.k8s.io/release/v${LATEST_VERSION}/bin/${OS}/${ARCH}/kubectl"
+      - cp ${TEMP}/kubectl /usr/local/bin/kubectl
+      - chmod a+x /usr/local/bin/kubectl
+      - kubectl completion bash >/etc/bash_completion.d/kubectl
+      - chmod a+x /etc/bash_completion.d/kubectl
+    update_scenario:
+      - rm -rf /etc/bash_completion.d/kubectl
+      - rm -rf /usr/local/bin/kubectl
+      - wget -q -L O ${TEMP}/kubectl "https://dl.k8s.io/release/v${LATEST_VERSION}/bin/${OS}/${ARCH}/kubectl"
+      - cp ${TEMP}/kubectl /usr/local/bin/kubectl
+      - chmod a+x /usr/local/bin/kubectl
+      - kubectl completion bash >/etc/bash_completion.d/kubectl
+      - chmod a+x /etc/bash_completion.d/kubectl
+    uninstall_scenario:
+      - rm -rf /etc/bash_completion.d/kubectl
+      - rm -rf /usr/local/bin/kubectl
   - name: helm
     description: The Kubernetes Package Manager
     newest_version_check: