Update VLANFactory and test_bulk_edit_objects_with_constrained_permission

[glennmatthews]

Closes: #N/A

What's Changed

• Update VLANFactory to use longer and more "realistic" names (originally implemented as part of, but then backed out of Increase vlan.name max_length to 255 #3173)
• This factory change to the test data uncovered a failure case in BulkEditObjectsViewTestCase.test_bulk_edit_objects_with_constrained_permission - namely, if the objects that it selects to bulk-edit already have an attribute set to the bulk-edit target value for this attribute, then the permission constraint that it defines will forbid editing these objects, causing the test to fail.
  • I've revised the test so that it now explicitly selects objects that are not set to the bulk-edit target value, and ensures that all of these objects are included in the permission constraint as permitted.

TODO

• Explanation of Change(s)
• Added change log fragment(s) (for more information see the documentation)
• n/a Attached Screenshots, Payload Example
• Unit, Integration Tests
• n/a Documentation Updates (when adding/changing features)
• n/a Example Plugin Updates (when adding/changing features)
• Outline Remaining Work, Constraints from Design

[gsnider2195]

Thank you! The documentation makes this test so much clearer.