Trigger core services update on host change

The device_type has an impact on the DHCP configuration.

JIRA INFRA-1846 #action In Progress

app/models.py

@@ -1852,17 +1852,17 @@ class Task(db.Model):
 
 
 def trigger_core_services_update(session):
-    """Trigger core services update on any Interface modification.
+    """Trigger core services update on any Interface or Host modification.
 
     Called by before flush hook
     """
-    # In session.dirty, we need to check session.is_modified(instance) because when updating a Host,
-    # the interface is added to the session even if not modified.
+    # In session.dirty, we need to check session.is_modified(instance) because the instance
+    # could have been added to the session without being modified
     # In session.deleted, session.is_modified(instance) is usually False (we shouldn't check it).
     # In session.new, it will always be True and we don't need to check it.
     for kind in ("new", "dirty", "deleted"):
         for instance in getattr(session, kind):
-            if isinstance(instance, Interface) and (
+            if isinstance(instance, (Host, Interface)) and (
                 (kind == "dirty" and session.is_modified(instance))
                 or (kind in ("new", "deleted"))
             ):

app/utils.py

@@ -296,7 +296,7 @@ def trigger_job_once(name, queue_name="low", **kwargs):
 def trigger_core_services_update():
     """Trigger a job to update the core services (DNS/DHCP/radius)
 
-    This function should be called every time an interface is created/edited
+    This function should be called every time an interface or host is created/edited
 
     The AWX template uses its own inventory that is updated on launch to avoid
     blocking the main inventory update when running.