Updated changelog for version 2.9.0

Signed-off-by: ddeidda <[email protected]>

Author: ddeidda

CHANGELOG.rst

@@ -2,6 +2,49 @@
 CHANGELOG
 =========
 
+2.9.0
+=====
+
+**ENHANCEMENTS**
+
+* Add support for multiple queues and multiple instance types feature with the Slurm scheduler.
+* Extend NICE DCV support to ARM instances.
+* Extend support to disable hyperthreading on instances (like \*.metal) that don't support CpuOptions in
+  LaunchTemplate.
+* Enable support for NFS 4 for the filesystems shared from the head node.
+* Add CLI utility to convert configuration files with Slurm scheduler to new format to support multiple queues
+  configuration.
+* Add script wrapper to support Torque-like commands with the Slurm scheduler.
+* Remove dependency on cfn-init in compute nodes bootstrap in order to avoid throttling and delays caused by CloudFormation when a large number of compute nodes join the cluster.
+
+**CHANGES**
+
+* Introduce new configuration sections and parameters to support multiple queues and multiple instance types.
+* Optimize scaling logic with Slurm scheduler, no longer based on Auto Scaling groups.
+* A Route53 private hosted zone is now created together with the cluster and used in DNS resolution inside cluster nodes
+  when using Slurm scheduler.
+* Upgrade EFA installer to version 1.9.5:
+  * EFA configuration: ``efa-config-1.4`` (from efa-config-1.3)
+  * EFA profile: ``efa-profile-1.0.0``
+  * EFA kernel module: ``efa-1.6.0`` (no change)
+  * RDMA core: ``rdma-core-28.amzn0`` (no change)
+  * Libfabric: ``libfabric-1.10.1amazon1.1`` (no change)
+  * Open MPI: ``openmpi40-aws-4.0.3`` (no change)
+* Upgrade Slurm to version 20.02.4.
+* Upgrade NICE DCV to version 2020.1-9012.
+* Use private IP instead of master node hostname when mounting shared NFS drives.
+* Add new log streams to CloudWatch: chef-client, clustermgtd, computemgtd, slurm_resume, slurm_suspend.
+* Add support for queue names in pre/post install scripts.
+* Use PAY_PER_REQUEST billing mode for DynamoDb table in govcloud regions.
+
+**BUG FIXES**
+
+* Solve dpkg lock issue with Ubuntu that prevented custom AMI creation in some cases.
+* Add/improve sanity checks for some configuration parameters.
+* Prevent ignored changes from being reported in ``pcluster update`` output.
+* Fix incompatibility issues with python 2.7 for ``pcluster update``.
+* Fix SNS Topic Subscriptions not being deleted with cluster's CloudFormation stack.
+
 2.8.1
 =====