Search also by description field when assigning addresses

[habalux]

Environment

• Python version: 3.6.5
• NetBox version: 2.5.8

Proposed Functionality

Hello, I have a small usability proposal I've been thinking about.

Occasionally, if an IP address is allocated before assigning it to a device, it would be slightly easier to locate afterwards if the search form in "Assign an IP address" page also filtered by the address description field.

This is a small change to the Django filter and does not break existing use cases. Ready to submit a PR if deemed worthy.

Use Case

1. Reserve IP address for future use and document the name/usage/etc. in the description field
2. Some time passes and the previously reserved numerical address is no longer fresh in your memory
3. Create a device which will be using the previously reserved address and start adding addresses using the Assign an IP Address page.
4. Enter part of the description in the search field and the address will show up without having to remember it numerically.

Previously one would have to first search for the address separately, take note of it and then return to the "Assign an IP address" page or switch between browser tabs, disrupting the workflow.

Database Changes

External Dependencies