Update the Microsoft apt repo receiving key (#37)

This fixes the Azure CLI install script

.circleci/config.yml

@@ -19,6 +19,20 @@ jobs:
           name: Helm Lint
           command: ./helm-lint.sh
           working_directory: scripts
+  # this step tests the install script for the Azure CLI
+  test-install-az-cli:
+    docker:
+      - image: quay.io/deis/go-dev:v1.2.0
+    steps:
+      - checkout
+      - run:
+          name: Install Basic Utilities
+          command: ./install-base-prereqs.sh
+          working_directory: scripts
+      - run:
+          name: Install the Azure CLI
+          command: ./install-azure-cli.sh
+          working_directory: scripts
   helm-sync:
     docker:
       - image: quay.io/deis/go-dev:v1.2.0
@@ -48,6 +62,9 @@ workflows:
   build:
     jobs:
       - build
+  test-install-az-cli:
+    jobs:
+      - test-install-az-cli
   build-and-deploy:
     jobs:
       - build

scripts/install-azure-cli.sh

@@ -1,8 +1,21 @@
 #!/bin/bash
 
-echo "deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli/ wheezy main" | sudo tee /etc/apt/sources.list.d/azure-cli.list
-apt-key adv --keyserver packages.microsoft.com --recv-keys 417A0893
+# About
+#
+# This script installs the Azure CLI. It copies the steps from the following link:
+#
+# https://docs.microsoft.com/en-us/cli/azure/install-azure-cli?view=azure-cli-latest
+#
+# under the "Install with apt package manager" section
+
+# first do an update and install apt-transport-https
+apt-get update
 apt-get install -y apt-transport-https
-# update package lists so we get the Microsoft packages (including azure-cli)
+
+# the add keys for the MSFT apt repo
+echo "deb [arch=amd64] https://packages.microsoft.com/repos/azure-cli/ wheezy main" | tee /etc/apt/sources.list.d/azure-cli.list
+apt-key adv --keyserver packages.microsoft.com --recv-keys 52E16F86FEE04B979B07E28DB02C46DF417A0893
+
+# then update again and install azure-cli
 apt-get update
 apt-get install -y azure-cli