In the context of #358 we identified that the event with the type `AllocationUpdated` and the client status `pending` is common but not always send by Nomad.
With this Commit we remove the condition that limits the evaluated Nomad events to the event with the type `AllocationUpdated`. Without the condition the event of the type `PlanResult` and the status `pending` will be evaluated equally. By now, this event seems to be sent every time.
This restriction led to started allocation not being registered when the `AllocationUpdated` event with client status `pending` was missing.
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