fix signing pipeline and use master in readme

src/Azs.Backup.Admin/readme.md

@@ -48,7 +48,7 @@ In this directory, run AutoRest:
 ``` yaml
 require:
   - $(this-folder)/../readme.azurestack.md
-  - $(repo)/specification/azsadmin/resource-manager/backup/readme.azsautogen.md
+  - $(repo)/specification/azsadmin/resource-manager/backup/readme.md
 
 metadata:
   description: 'Microsoft AzureStack PowerShell: Backup Admin cmdlets'

src/readme.azurestack.md

@@ -4,7 +4,7 @@
 ``` yaml
 azure: true
 powershell: true
-branch: stackadmin
+branch: master
 repo: https://github.com/Azure/azure-rest-api-specs/tree/$(branch)
 metadata:
   authors: Microsoft Corporation

tools/validate-signing.ps1

@@ -44,10 +44,13 @@ Write-Verbose -Message "Current path to check for unsigned files: ${pathToValida
 
 ################################# END EXTRACT NUPKG #################################
 
+$exclude = @("Unprotect-SecureString.ps1")
+
 if (Test-Path -Path $pathToValidate -PathType Container)
 {
     $fileInfos = Get-ChildItem -Path $pathToValidate -File -Recurse `
-        | Where-Object { $_.Extension -iin @('.dll','.exe','.msi','.cab','.ps1','.psm1','.psd1','.pssc','.ps1xml') } `
+        | Where-Object { $_.Name -notin $exclude }
+        | Where-Object { $_.Extension -in @('.dll','.exe','.msi','.cab','.ps1','.psm1','.psd1','.pssc','.ps1xml') } `
         | Where-Object { $_.FullName -notlike $(Join-Path -Path "*${moduleName}" -ChildPath "test*") }
 }
 elseif (Test-Path -Path $pathToValidate -PathType Leaf)