Release beta 9 (#638)

* Release beta 9

* Update Changelog with latest master

Author: nmuesch

CHANGELOG.md

@@ -1,5 +1,21 @@
 # CHANGELOG
 
+## 1.0.0-beta.9 / 2021-02-04
+
+* [Added] Add restricted roles to monitor update. See [#634](https://github.com/DataDog/datadog-api-client-java/pull/634).
+* [Added] Add endpoint for IoT billing usage. See [#631](https://github.com/DataDog/datadog-api-client-java/pull/631).
+* [Added] Add query parameters for SLO search endpoint. See [#629](https://github.com/DataDog/datadog-api-client-java/pull/629).
+* [Added] Add fields for formula and function query definition and widget formulas. See [#626](https://github.com/DataDog/datadog-api-client-java/pull/626).
+* [Added] Add global_time to time_window slo widget. See [#624](https://github.com/DataDog/datadog-api-client-java/pull/624).
+* [Added] Update required fields in SLO Correction create and update requests . See [#618](https://github.com/DataDog/datadog-api-client-java/pull/618).
+* [Added] Add log index creation (POST). See [#614](https://github.com/DataDog/datadog-api-client-java/pull/614).
+* [Fixed] Fix unit format in SLO history response. See [#639](https://github.com/DataDog/datadog-api-client-java/pull/639).
+* [Fixed] Remove unused downloadFile helpers. See [#637](https://github.com/DataDog/datadog-api-client-java/pull/637).
+* [Fixed] Fix location of restricted roles for Monitors. See [#632](https://github.com/DataDog/datadog-api-client-java/pull/632).
+* [Fixed] Fix paging parameter names for logs aggregate queries. See [#628](https://github.com/DataDog/datadog-api-client-java/pull/628).
+* [Fixed] Add `additionalProperties: false` to synthetics target field. See [#610](https://github.com/DataDog/datadog-api-client-java/pull/610).
+* [Changed] Fix some integer/number formats in Logs and Synthetics endpoints. See [#611](https://github.com/DataDog/datadog-api-client-java/pull/611).
+
 ## 1.0.0-beta.8 / 2021-01-14
 
 * [Added] Add SLO Corrections endpoint. See [#607](https://github.com/DataDog/datadog-api-client-java/pull/607).