Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1751981

Description of problem:
In a Parent-Child relation (e.q. in Location and Host Group) the Parent properties are not being propagated to the Child objects.

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

How reproducible:
Consistent

Steps to Reproduce:
1.Create Parent Location with Subnet assigned
2.Create a Child Location from this Parent
3.Create a host and assign it to the Child Location

Actual results:
Error message: Subnet not defined for host's location
(this happens both via GUI's "Create Host" and hammer-cli 'hammer host create --name <name> --location <Child Location>...'

Expected results:
Host created successfully with assigned Location's properties

Additional info:
Related to bug #1733241 where hammer doesn't support inheritance properties.