Merge pull request #7711 from bganapa/update-warning2

Updating the warning message to match that of portal UI

Author: Maddie Clayton

src/StackAdmin/Azs.Update.Admin/Module/Azs.Update.Admin/Azs.Update.Admin.psd1

@@ -115,7 +115,7 @@ Licensed under the MIT License. See License.txt in the project root for license
 
             # ReleaseNotes of this module
             ReleaseNotes = '## 2018.12
-            * Added a warning to recommend running Test-AzureStack before Install-AzsUpdate
+            * Added a warning to recommend running Test-AzureStack before Install-AzsUpdate, supported with 1811 update
             '
 
         } # End of PSData hashtable

src/StackAdmin/Azs.Update.Admin/Module/Azs.Update.Admin/Generated.PowerShell.Commands/SwaggerPathCommands/Install-AzsUpdate.ps1

@@ -95,10 +95,10 @@ function Install-AzsUpdate {
             $Name = Get-ResourceNameSuffix -ResourceName $Name
         }
 
-        Write-Warning -Message 'It is strongly recommended to run Test-AzureStack(https://aka.ms/testazurestack) before applying update.'
+        Write-Warning -Message 'Run Test-AzureStack -Group UpdateReadiness to validate the status of your Azure Stack and then resolve any operational issues found, including all warnings and failures.'
 
         if ($PsCmdlet.ShouldProcess($Name, "Install the update")) {
-            if ($Force.IsPresent -or $PsCmdlet.ShouldContinue("It is strongly recommended to Test-AzureStack before applying update. Are you sure you want to continue?", "Performing Update $Name")) {
+            if ($Force.IsPresent -or $PsCmdlet.ShouldContinue("Run Test-AzureStack -Group UpdateReadiness to validate the status of your Azure Stack and then resolve any operational issues found, including all warnings and failures. Are you sure you want to continue?", "Performing Update $Name")) {
 
                 $NewServiceClient_params = @{
                     FullClientTypeName = 'Microsoft.AzureStack.Management.Update.Admin.UpdateAdminClient'