Added support for Config Context with Dynamic Groups

[bile0026]

Closes: #3271

What's Changed

Add functionality to apply config context items based on dynamic groups. This new feature is feature flagged with the CONFIG_CONTEXT_DYNAMIC_GROUPS_ENABLED in nautobot.core.settings.

TODO

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

[glennmatthews]

Thanks for the pull request!

[gsnider2195]

Can you update these tests in nautobot/extras/tests/test_models.py?

• ConfigContextTest.test_annotation_same_as_get_for_object_device_relations
• ConfigContextTest.test_annotation_same_as_get_for_object_virtualmachine_relations

This would probably be a good candidate for a new test to ensure the filtering is working properly:

• DeviceA is a member of DynamicGroupA that's tied to ConfigContextA
• DeviceB is a member of DynamicGroupB that's tied to ConfigContextB
• Make sure DeviceA.get_config_context() returns ConfigContextA data but not ConfigContextB and vice versa for DeviceB

[gsnider2195]

Just need to add some tests and update the filter name and should be good to go

[glennmatthews]

Sorry to put a hold on this for the moment - see my comment about the API. Hopefully we'll have an answer to that point shortly!

[gsnider2195]

Please squash the migrations into one if possible

Change requested (squash migrations) addressed.

[glennmatthews]

see #3432.