Parent interface not scoped to device on interface bulk import

[sleepinggenius2]

NetBox version

v2.11.9

Python version

3.8

Steps to Reproduce

1. Click on Devices > Interfaces > Import
2. Enter the following into the CSV input:

device,name,type,parent
dev1,int1,10gbase-x-sfpp,
dev1,int1/1,virtual,int1
dev2,int1,10gbase-x-sfpp,
dev2,int1/1,virtual,int1

3. Click Submit

Expected Behavior

The import should have completed successfully.

Observed Behavior

* Row 4 parent: "int1" is not a unique value for this field; multiple objects were found

The code only seems to scope the lag field to the device, but not the parent field.

[jeremystretch]

Looks like the __init__() method of dcim.forms.InterfaceCSVForm needs to be extended to limit the queryset of the parent field, as we do for lag. Should be a simple fix; ideal for a new contributor.