Add integration_type service to anglian_water (home-assistant#158839)

Author: joostlek

homeassistant/components/anglian_water/manifest.json

@@ -4,6 +4,7 @@
   "codeowners": ["@pantherale0"],
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/anglian_water",
+  "integration_type": "service",
   "iot_class": "cloud_polling",
   "loggers": ["pyanglianwater"],
   "quality_scale": "bronze",

homeassistant/generated/integrations.json

@@ -347,7 +347,7 @@
     },
     "anglian_water": {
       "name": "Anglian Water",
-      "integration_type": "hub",
+      "integration_type": "service",
       "config_flow": true,
       "iot_class": "cloud_polling"
     },