Aws-parallelcluster

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**ENHANCEMENTS**

- Add support for FSx Lustre in Centos 7. In case of custom AMI, FSx Lustre is
only supported with Centos 7.5 and Centos 7.6.
- Check AWS EC2 instance account limits before starting cluster creation
- Allow users to force job deletion with ``SGE`` scheduler

**CHANGES**

- Set default value to ``compute`` for ``placement_group`` option
- ``pcluster ssh``: use private IP when the public one is not available
- ``pcluster ssh``: now works also when stack is not completed as long as the master IP is available
- Remove unused dependency on ``awscli`` from ParallelCluster package

**BUG FIXES**

- ``awsbsub``: fix file upload with absolute path
- ``pcluster ssh``: fix issue that was preventing the command from working correctly when stack status is
``UPDATE_ROLLBACK_COMPLETE``
- Fix block device conversion to correctly attach EBS nvme volumes
- Wait for Torque scheduler initialization before completing master node setup
- ``pcluster version``: now works also when no ParallelCluster config is present
- Improve ``nodewatcher`` daemon logic to detect if a SGE compute node has running jobs

**DOCS**

- Add documentation on how to use FSx Lustre
- Add tutorial for encrypted EBS with a Custom KMS Key
- Add ``ebs_kms_key_id`` to Configuration section

**TESTING**

- Define a new framework to write and run ParallelCluster integration tests
- Improve scaling integration tests to detect over-scaling
- Implement integration tests for awsbatch scheduler
- Implement integration tests for FSx Lustre file system

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- Add China regions ``cn-north-1`` and ``cn-northwest-1``

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- Add configuration for RAID 0 and 1 volumes
- Add Elastic File System (EFS) support
- Add AWS Batch Multinode Parallel jobs support
- Add support for Stockholm region (``eu-north-1``)
- Add ``--env``and ``--env-blacklist``options to the ``awsbsub`` command to export environment variables
in the job environment
- Add ``--input-file``option to the ``awsbsub`` command to stage-in input files from the client
- Add new ``PCLUSTER_JOB_S3_URL`` variable to the job execution environment pointing to the S3 URL used
for job data stage-in/out
- Add S3 URL for job data staging to the ``awsbstat -d``output
- Add ``--working-dir``and ``--parent-working-dir``options to the ``awsbsub`` command to specify
the working-directory or the parent working directory for the job
- Add CPUs and Memory information to the ``awsbhosts -d``command

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- Add support for GovCloud East, us-gov-east-1 region
- Fix regression with ``shared_dir`` parameter in the cluster configuration section.
- bugfix:``cfncluster-cookbook``: Fix issue with jq on ubuntu1404 and centos6. Now using version 1.4.
- bugfix:``cfncluster-cookbook``: Fix dependency issue with AWS CLI package on ubuntu1404.

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- Fix ``configure`` and ``createami`` commands

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- Rename CfnCluster to AWS ParallelCluster
- Support multiple EBS Volumes
- Add AWS Batch as a supported scheduler
- Support Custom AMI's