Update Phonebook.preview.yml for Azure Pipelines (#158)

This fixes the task beeing canceled after 30 minutes.

Author: DanielHabenicht

.azure/pipelines/Phonebook.preview.yml

@@ -211,6 +211,8 @@ jobs:
     displayName: 'Delay Deletion of Preview Environment'
     pool: server
     dependsOn: deploy_preview
+    timeoutInMinutes: 725
+    cancelTimeoutInMinutes: 725
     steps: 
     - task: Delay@1
       inputs:
@@ -220,6 +222,7 @@ jobs:
   - job: delete_preview
     dependsOn:
       - delete_preview_delay
+    condition: succeededOrFailed()
     displayName: 'Delete Preview Environment'
     pool:
       vmImage: 'ubuntu-16.04'