Updated CHANGELOG for 0.27.2-rc1 release.
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+Release Notes - Mesos - Version 0.27.2
+--------------------------------------
+* This is a bug fix release.
+
+** Bug
+ * [MESOS-4693] - Variable shadowing in HookManager::slavePreLaunchDockerHook.
+ * [MESOS-4711] - Race condition in libevent poll implementation causes crash.
+ * [MESOS-4754] - The "executors" field is exposed under a backwards incompatible schema.
+
+** Improvement
+ * [MESOS-4687] - Implement reliable floating point for scalar resources.
+
+
Release Notes - Mesos - Version 0.27.1
--------------------------------------
* This is a bug fix release.
