Adds backend propagation check for E2E recordset scenario test

It's worth adding propagation check to this test:
'test_create_and_delete_records_on_existing_zone'
This (DDT based) test covers almost all supported record types
and therefore it makes sense using a query client here
to ensure successfully create/delete of the recordset on the backends
for each tested type.

Change-Id: I4796efc3deb79b5135f667f6880349b70aa016c7
1 file changed