Add INTEGRATING enum to ReplicateOperationState (#2085)

Author: tsmith023

weaviate/cluster/models.py

@@ -18,6 +18,7 @@ class ReplicateOperationState(str, Enum):
     HYDRATING = "HYDRATING"
     FINALIZING = "FINALIZING"
     DEHYDRATING = "DEHYDRATING"
+    INTEGRATING = "INTEGRATING"
     READY = "READY"
     CANCELLED = "CANCELLED"