docs(changelog) add uuid generation fix note

CHANGELOG.md

@@ -1,5 +1,11 @@
 ## [Unreleased][unreleased]
 
+### Fixed
+
+- Prevent third-party Lua modules (and plugins) to override the seed for random
+  number generation. This prevents the creation of conflicitng UUIDs.
+  [#1558](https://github.com/Mashape/kong/pull/1558)
+
 ## [0.9.0] - 2016/08/18
 
 The main focus of this release is Kong's new CLI. With a simpler configuration file, new settings, environment variables support, new commands as well as a new interpreter, the new CLI gives more power and flexibility to Kong users and allow for an easier integration in your deployment workflow, as well as better testing for developers and plugins authors. Additionally, some new plugins and performance improvements are included as well as the regular bug fixes.