Update CHANGELOG.

CHANGELOG.md

 # Changelog
 
+## 0.15.0
+* Enables v1beta3 API and sets it to the default API version (#6098)
+  * See the [v1beta3 conversion guide](https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/api.md#v1beta3-conversion-tips)
+* Added multi-port Services (#6182)
+* New Getting Started Guides
+  * Multi-node local startup guide (#6505)
+  * JUJU (#5414)
+  * Mesos on Google Cloud Platform (#5442)
+  * Ansible Setup instructions (#6237)
+* Added a controller framework (#5270, #5473)
+* The Kubelet now listens on a secure HTTPS port (#6380)
+* Made kubectl errors more user-friendly (#6338)
+* The apiserver now supports client cert authentication (#6190)
+* The apiserver now limits the number of concurrent requests it processes (#6207)
+* Added rate limiting to pod deleting (#6355)
+* Implement Balanced Resource Allocation algorithm as a PriorityFunction in scheduler package (#6150)
+* Enabled log collection from master (#6396)
+* Added an api endpoint to pull logs from Pods (#6497)
+* Added latency metrics to scheduler (#6368)
+* Added latency metrics to REST client (#6409)
+* etcd now runs in a pod on the master (#6221)
+* nginx now runs in a container on the master (#6334)
+* Began creating Docker images for master components (#6326)
+* Updated GCE provider to work with gcloud 0.9.54 (#6270)
+* Updated AWS provider to fix Region vs Zone semantics (#6011)
+* Record event when image GC fails (#6091)
+* Add a QPS limiter to the kubernetes client (#6203)
+* Decrease the time it takes to run make release (#6196)
+* New volume support
+  * Added iscsi volume plugin (#5506)
+  * Added glusterfs volume plugin (#6174)
+  * AWS EBS volume support (#5138)
+* Updated to heapster version to v0.10.0 (#6331)
+* Updated to etcd 2.0.9 (#6544)
+* Updated to Kibana to v1.2 (#6426)
+* Bug Fixes
+  * Kube-proxy now updates iptables rules if a service's public IPs change (#6123)
+  * Retry kube-addons creation if the initial creation fails (#6200)
+  * Make kube-proxy more resiliant to running out of file descriptors (#6727)
+
+## 0.14.2
+ * Fix a regression in service port handling validation
+ * Add a work around for etcd bugs in watch
+
+## 0.14.1
+ * Fixed an issue where containers with hostPort would sometimes go pending forever. (#6110)
+
+## 0.14.0
+ * Add HostNetworking container option to the API.
+ * PersistentVolume API
+ * NFS volume plugin fixed/re-added
+ * Upgraded to etcd 2.0.5 on Salt configs
+ * .kubeconfig changes
+ * Kubelet now posts pod status to master, versus master polling.
+ * All cluster add-on images are pulled from gcr.io
+
+## 0.13.2
+ * Fixes possible cluster bring-up flakiness on GCE/Salt based clusters
+ 
+
+## 0.12.2
+ * #5348 - Health check the docker socket and Docker generally
+ * #5395 - Garbage collect unknown containers
+
+## 0.12.1
+ * DockerCache doesn't get containers at startup (#5115)
+ * Update version of kube2sky to 1.1 (#5127)
+ * Monit health check kubelet and restart unhealthy one (#5120)
+
+## 0.12.0
+ * Hide the infrastructure pod from users
+ * Configure scheduler via JSON
+ * Improved object validation
+ * Improved messages on scheduler failure
+ * Improved messages on port conflicts
+ * Move to thread-per-pod in the kubelet
+ * Misc. kubectl improvements
+ * Update etcd used by SkyDNS to 2.0.3
+ * Fixes to GCE PD support
+ * Improved support for secrets in the API
+ * Improved OOM behavior
+
+## 0.11
+* Secret API Resources
+* Better error handling in various places
+* Improved RackSpace support
+* Fix ```kubectl``` patch behavior
+* Health check failures fire events
+* Don't delete the pod infrastructure container on health check failures
+* Improvements to Pod Status detection and reporting
+* Reduce the size of scheduled pods in etcd
+* Fix some bugs in namespace clashing
+* More detailed info on failed image pulls
+* Remove pods from a failed node
+* Safe format and mount of GCE PDs
+* Make events more resilient to etcd watch failures
+* Upgrade to container-vm 01-29-2015
+
+## 0.10
+   * Improvements to swagger API documentation.
+   * Upgrade container VM to 20150129
+   * Start to move e2e tests to Ginkgo
+   * Fix apiserver proxy path rewriting
+   * Upgrade to etcd 2.0.0
+   * Add a wordpress/mysql example
+   * Improve responsiveness of the master when creating new pods
+   * Improve api object validation in numerous small ways
+   * Add support for IPC namespaces
+   * Improve GCE PD support
+   * Make replica controllers with node selectors work correctly
+   * Lots of improvements to e2e tests (more to come)
+
 ## 0.9
 ### Features
  - Various improvements to kubectl