Missing results in a CombinedStatus object

Description of the Issue

A CombinedStatus object, which is specific to Binding (BindingPolicy) and workload object, lacks an entry in results for some StatusCollector whose name is associated with the workload object by the Binding.

Root Cause

There is no StatusCollector object with the name given in the Binding.

This could be because of a typo in the Binding or because something failed to create the intended StatusCollector.