Description of problem:
Can't delete a network trunk because the port is still active.
When trying to delete the trunk you get a "ConflictException" and when trying to delete the parent port you get a "PortInUseAsTrunkParent".
I was able to reproduce the same in one of our labs and got same errors, but disabling the port allowed me to finally remove the trunk and later the port.
This is not the case for the customer as the original VM doesn't exist anymore and port looks bounded with binding_vif_type: ovs.
There are no errors in logs.

Version-Release number of selected component (if applicable):
RHOSP 17.1.3

How reproducible:

Steps to Reproduce:
1. Create a simple port
2. Create a network trunk using port as parent port
3. Try to remove the trunk or the port

Actual results:
Can't delete the trunk

Expected results:
Trunk should be deleted

Additional info:
More info in following comments. Sosreports and DB dump attached to case.