Add dns_name filter on the IP Address page (#14046)

* Add dns_name filter on the IP Address page #13957

* add dns_name field in the filterset field and remove extra method

Author: kprince28

netbox/ipam/forms/filtersets.py

@@ -295,7 +295,7 @@ class IPAddressFilterForm(TenancyFilterForm, NetBoxModelFilterSetForm):
     model = IPAddress
     fieldsets = (
         (None, ('q', 'filter_id', 'tag')),
-        (_('Attributes'), ('parent', 'family', 'status', 'role', 'mask_length', 'assigned_to_interface')),
+        (_('Attributes'), ('parent', 'family', 'status', 'role', 'mask_length', 'assigned_to_interface', 'dns_name')),
         (_('VRF'), ('vrf_id', 'present_in_vrf_id')),
         (_('Tenant'), ('tenant_group_id', 'tenant_id')),
         (_('Device/VM'), ('device_id', 'virtual_machine_id')),
@@ -357,6 +357,10 @@ class IPAddressFilterForm(TenancyFilterForm, NetBoxModelFilterSetForm):
             choices=BOOLEAN_WITH_BLANK_CHOICES
         )
     )
+    dns_name = forms.CharField(
+        required=False,
+        label=_('DNS Name')
+    )
     tag = TagFilterField(model)