Merge remote-tracking branch 'origin/wj' into wilm

plugins/endpoints/plugin.py

@@ -1121,7 +1121,10 @@ class EndpointsPlugin(BasePlugin):
         if 'osinfo' in payload:
             state.osinfojson = _as_json(payload.get('osinfo'))
         if 'domain' in payload:
-            state.domain = payload.get('domain')
+            # Clamped like every other String column here: an over-long value
+            # aborts the whole collector transaction under STRICT_TRANS_TABLES,
+            # so one bad agent report would drop a machine's entire telemetry.
+            state.domain = _clamp(payload.get('domain'), 255)
         if 'pendingreboot' in payload:
             state.pendingreboot = payload.get('pendingreboot')
         if 'diskhealth' in payload: