Allow for nulls in the exists method #571
Merged
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If the allow_null argument is true we now allow any result
to return as true. This nullifies the bool() check
So seems bad, but in some cases when an attribute exists
When looking up 'get_object_attribute_names' we want
the value of that attribute even if it is null
In the case of an allow_null then only a KeyError
will return False
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1730311