[CI] Fix condition to start executing the device tests. (#11855)

tools/devops/automation/templates/devices/build.yml

@@ -169,8 +169,9 @@ steps:
 # only execute it on failure setting the variable later pass as part of the parameters
 - pwsh: |
     Write-Host "##vso[task.setvariable variable=provisioningSuccess;]False"
+  displayName: 'Set provisioning as failure'
   condition: failed()
 
 - template: run-tests.yml 
   parameters: 
-    botProvisioningSuccess: $[ variables.provisioningSuccess ]
+    botProvisioningSuccess:  ne(variables['provisioningSuccess'], 'False')