Fix PeerEndpoint ordering for Aurora DB

Author: mzbroch

nautobot_bgp_models/models.py

@@ -487,6 +487,7 @@ def local_ip(self):
     )
 
     class Meta:
+        ordering = ["pk"]
         verbose_name = "BGP Peer Endpoint"
 
     def __str__(self):
@@ -553,14 +554,12 @@ class Meta:
     @property
     def endpoint_a(self):
         """Get the "first" endpoint associated with this Peering."""
-        # order_by - needed by Aurora DB, to be removed via #149
-        return self.endpoints.order_by("pk")[0] if self.endpoints.exists() else None
+        return self.endpoints.all()[0] if self.endpoints.exists() else None
 
     @property
     def endpoint_z(self):
         """Get the "second" endpoint associated with this Peering."""
-        # order_by - needed by Aurora DB, to be removed via #149
-        return self.endpoints.order_by("pk")[1] if self.endpoints.count() > 1 else None
+        return self.endpoints.all()[1] if self.endpoints.count() > 1 else None
 
     def __str__(self):
         """String representation of a single Peering."""