Set integration type for tankerkoenig (home-assistant#154715)

Author: mib1185

homeassistant/components/tankerkoenig/manifest.json

@@ -4,6 +4,7 @@
   "codeowners": ["@guillempages", "@mib1185", "@jpbede"],
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/tankerkoenig",
+  "integration_type": "service",
   "iot_class": "cloud_polling",
   "loggers": ["aiotankerkoenig"],
   "quality_scale": "platinum",

homeassistant/generated/integrations.json

@@ -6642,7 +6642,7 @@
     },
     "tankerkoenig": {
       "name": "Tankerkoenig",
-      "integration_type": "hub",
+      "integration_type": "service",
       "config_flow": true,
       "iot_class": "cloud_polling"
     },