docs: adds provisioning examples for all datasources

closes #11363

docs/sources/features/datasources/postgres.md

@@ -217,3 +217,23 @@ tags | Optional field name to use for event tags as a comma separated string.
 
 Time series queries should work in alerting conditions. Table formatted queries is not yet supported in alert rule
 conditions.
+
+## Configure datasource with provisioning
+
+Its now possible to configure datasources using config files with Grafanas [provisioning system](/administration/provisioning/#datasources).
+Here are some examples of how you can configure the Cloudwatch datasource using configuration.
+
+```yaml
+apiVersion: 1
+
+datasources:
+  - name: Postgres
+    type: postgres
+    url: localhost:5432
+    database: grafana
+    user: grafana
+    password: password
+    jsonData:
+      sslmode: "disable" # disable/require/verify-ca/verify-full
+
+```