Add installation of ALZ Powershell module for policy scripts

.github/scripts/Invoke-PolicyToBicep-China.ps1

@@ -13,8 +13,6 @@ param (
   [string]
   $rootPath = "./infra-as-code/bicep/modules/policy",
   [string]
-  $alzToolsPath = "$PWD/../Enterprise-Scale/src/Alz.Tools",
-  [string]
   $definitionsRoot = "definitions",
   [string]
   $lineEnding = "unix",
@@ -43,8 +41,15 @@ param (
 )
 
 # This script relies on a custom set of classes and functions
-# defined within the Alz.Tools PowerShell module.
-Import-Module $alzToolsPath -ErrorAction Stop
+# defined within the [ALZ-PowerShell-Module](https://github.com/Azure/Alz-powershell-module).
+if (-not (Get-Module -ListAvailable -Name ALZ)) {
+  # Module doesn't exist, so install it
+  Write-Information "====> ALZ module isn't already installed. Installing..." -InformationAction Continue
+  Install-Module -Name ALZ -Force -Scope CurrentUser -ErrorAction Stop
+  Write-Information "====> ALZ module now installed." -InformationAction Continue
+} else {
+  Write-Information "====> ALZ module is already installed." -InformationAction Continue
+}
 
 # Line Endings function to be used in three functions below
 function Update-FileLineEndingType {

.github/scripts/Invoke-PolicyToBicep.ps1

@@ -38,6 +38,17 @@ param (
   $assignmentsTxtFileName = "_policyAssignmentsBicepInput.txt"
 )
 
+# This script relies on a custom set of classes and functions
+# defined within the [ALZ-PowerShell-Module](https://github.com/Azure/Alz-powershell-module).
+if (-not (Get-Module -ListAvailable -Name ALZ)) {
+  # Module doesn't exist, so install it
+  Write-Information "====> ALZ module isn't already installed. Installing..." -InformationAction Continue
+  Install-Module -Name ALZ -Force -Scope CurrentUser -ErrorAction Stop
+  Write-Information "====> ALZ module now installed." -InformationAction Continue
+} else {
+  Write-Information "====> ALZ module is already installed." -InformationAction Continue
+}
+
 # Line Endings function to be used in three functions below
 function Update-FileLineEndingType {
   [CmdletBinding(SupportsShouldProcess)]

.github/workflows/update-policy-china.yml

@@ -68,14 +68,18 @@ jobs:
               -Reset
           azPSVersion: "latest"
 
+      - name: Install ALZ PowerShell Module
+        shell: pwsh
+        run: |
+          Install-Module -Name 'ALZ' -Force
+
       - name: Update Policy Definition Bicep Input Files
         uses: azure/powershell@v1
         with:
           inlineScript: |
             cd ${{ github.workspace }}/${{ github.repository }}
             Write-Information "==> Running script..." -InformationAction Continue
-            .github/scripts/Invoke-PolicyToBicep-China.ps1 `
-              -alzToolsPath "${{ github.workspace }}/${{ env.remote_repository }}/src/Alz.Tools/"
+            .github/scripts/Invoke-PolicyToBicep-China.ps1
           azPSVersion: "latest"
 
       - name: Check for changes