Fix loadBalancer attribute name (#908)

Closes #906

Author: catzc

Diff for: dask_kubernetes/operator/controller/controller.py

@@ -401,7 +401,7 @@ async def handle_scheduler_service_status(
     assert namespace
     # If the Service is a LoadBalancer with no ingress endpoints mark the cluster as Pending
     if spec["type"] == "LoadBalancer" and not len(
-        status.get("load_balancer", {}).get("ingress", [])
+        status.get("loadBalancer", {}).get("ingress", [])
     ):
         phase = "Pending"
     # Otherwise mark it as Running

Diff for: dask_kubernetes/operator/networking.py

@@ -50,8 +50,8 @@ async def get_external_address_for_scheduler_service(
     """Take a service object and return the scheduler address."""
     if service.spec.type == "LoadBalancer":
         port = _get_port(service, port_name)
-        lb = service.status.load_balancer.ingress[0]
-        host = lb.hostname or lb.ip
+        lb = service.status.loadBalancer.ingress[0]
+        host = lb.get("hostname", None) or lb.ip
     elif service.spec.type == "NodePort":
         port = _get_port(service, port_name, is_node_port=True)
         nodes = await kr8s.asyncio.get("nodes")