7025 circuit redundancy (#16945)

* 7025 CircuitRedundancyGroups

* 7025 CircuitRedundancyGroups api

* 7025 CircuitRedundancyGroups api

* 7025 CircuitRedundancyGroups tests

* 7025 CircuitRedundancyGroup -> CircuitGroup

* 7025 add tenancy

* 7025 linkify name

* 7025 missing file

* 7025 circuitgroupassignment

* 7025 base group assignment working

* 7025 assignments

* 7025 fix forms/tests for CircuitGroup

* 7025 fix api tests

* 7025 view tests

* 7025 CircuitGroupAssignment tests

* 7025 fix typo

* 7025 fix typo

* 7025 fix tests

* 7025 remove m2m

* 7025 add count to serializer

* 7025 fix test

* 7025 documentation

* 7025 review comments

* 7025 review comments

* 7025 add search index

* Make CircuitPriorityChoices extensible

* Add group assignment table to circuit view

* Misc cleanup

---------

Co-authored-by: Jeremy Stretch <jstretch@netboxlabs.com>

netbox/circuits/forms/model_forms.py

@@ -12,6 +12,8 @@ from utilities.forms.widgets import DatePicker, NumberWithOptions
 
 __all__ = (
     'CircuitForm',
+    'CircuitGroupAssignmentForm',
+    'CircuitGroupForm',
     'CircuitTerminationForm',
     'CircuitTypeForm',
     'ProviderForm',
@@ -171,3 +173,35 @@ class CircuitTerminationForm(NetBoxModelForm):
                 options=CircuitTerminationPortSpeedChoices
             ),
         }
+
+
+class CircuitGroupForm(TenancyForm, NetBoxModelForm):
+    slug = SlugField()
+
+    fieldsets = (
+        FieldSet('name', 'slug', 'description', 'tags', name=_('Circuit Group')),
+        FieldSet('tenant_group', 'tenant', name=_('Tenancy')),
+    )
+
+    class Meta:
+        model = CircuitGroup
+        fields = [
+            'name', 'slug', 'description', 'tenant_group', 'tenant', 'tags',
+        ]
+
+
+class CircuitGroupAssignmentForm(NetBoxModelForm):
+    group = DynamicModelChoiceField(
+        label=_('Group'),
+        queryset=CircuitGroup.objects.all(),
+    )
+    circuit = DynamicModelChoiceField(
+        label=_('Circuit'),
+        queryset=Circuit.objects.all(),
+    )
+
+    class Meta:
+        model = CircuitGroupAssignment
+        fields = [
+            'group', 'circuit', 'priority', 'tags',
+        ]