Merge pull request #4 from radhus/master

HACS compliant

custom_components/prometheus_query/manifest.json

@@ -3,6 +3,8 @@
   "name": "Prometheus query sensor",
   "version": "2021.06.1",
   "documentation": "https://github.com/lfasci/homeassistant-prometheus-query",
+  "issue_tracker": "https://github.com/lfasci/homeassistant-prometheus-query",
   "codeowners": ["lfasci"],
-  "requirements": ["prometheus-client==0.9.0", "requests==2.25.0"]
+  "requirements": ["prometheus-client==0.9.0", "requests==2.25.0"],
+  "iot_class": "local_polling"
 }