"service" does not preserve the order of ports when editing

[candlerb]

NetBox version

v3.6.5

Python version

3.8

Steps to Reproduce

1. Create a "service", and enter the ports as "9093,9095,9998-9999"
2. View the list of services
3. Edit the service (i.e. click the pencil icon at the end of the service row)

Expected Behavior

Either the ports to remain in the order originally entered, or to be sorted. (I note that the data type in the underlying Postgres column is integer[] which is an ordered list)

Observed Behavior

When viewing the table of services (/ipam/services/), the ports are shown in order:

It also shows the same when viewing the details of an individual service (e.g. /ipam/services/2/)

However, when editing the service (/ipam/services/2/edit/), the ports are in a randomized order:

This matches what's in the database, which in the same randomized order:

netbox=# select ports from ipam_service where id=2
         ports
-----------------------
 {9999,9093,9998,9095}
(1 row)

[jeremystretch]

This is due to a bug in utilities.forms.utils.parse_numeric_range(). We're calling set() on the expanded value to remove potential duplicates, but not ordering the result after casting it to a list.