Closes #14311: Move L2VPN models from ipam to vpn (#14358)

* Move L2VPN and L2VPNTermination models from ipam to vpn

* Move L2VPN resources from ipam to vpn

* Extend migration to update content types

* Misc cleanup

netbox/ipam/search.py

@@ -1,5 +1,5 @@
-from . import models
 from netbox.search import SearchIndex, register_search
+from . import models
 
 
 @register_search
@@ -69,18 +69,6 @@ class IPRangeIndex(SearchIndex):
     display_attrs = ('vrf', 'tenant', 'status', 'role', 'description')
 
 
-@register_search
-class L2VPNIndex(SearchIndex):
-    model = models.L2VPN
-    fields = (
-        ('name', 100),
-        ('slug', 110),
-        ('description', 500),
-        ('comments', 5000),
-    )
-    display_attrs = ('type', 'identifier', 'tenant', 'description')
-
-
 @register_search
 class PrefixIndex(SearchIndex):
     model = models.Prefix