Add integration_type service to pushbullet (#159896)

homeassistant/components/pushbullet/manifest.json

@@ -4,6 +4,7 @@
   "codeowners": ["@engrbm87"],
   "config_flow": true,
   "documentation": "https://www.home-assistant.io/integrations/pushbullet",
+  "integration_type": "service",
   "iot_class": "cloud_polling",
   "loggers": ["pushbullet"],
   "requirements": ["pushbullet.py==0.11.0"]

homeassistant/generated/integrations.json

@@ -5290,7 +5290,7 @@
     },
     "pushbullet": {
       "name": "Pushbullet",
-      "integration_type": "hub",
+      "integration_type": "service",
       "config_flow": true,
       "iot_class": "cloud_polling"
     },