Filetransfer service

[roleyfoley]

Description

AWS implementation of hamlet-io/engine#1369

Adds the following

• Services for the AWS Transfer family ( https://aws.amazon.com/aws-transfer-family/ )
• Component for file transfer based on the AWS Transfer family
• Public Key support for the user component - allowing for multiple public keys to be configured for a user
• Public and private support for SFTP gateway using EIP's and Security groups

Motivation and Context

To Support file transfer integration with services that do not support cloud provider integration

How Has This Been Tested?

Tested locally

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Refactor (non-breaking change which improves the structure or operation of the implementation)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Followup Actions

• executor-bash : feat(filetransfer): security group management for filetransfer executor-bash#76
• engine: feat(filetransfer): support for a file transfer component engine#1369
• engine-plugin-aws: Filetransfer service #108

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• [X ] None of the above.

[ml019]

Overall structure looks in pattern. As this will be tested with customer site shortly, will merge on basis of quick turnaround/detection for any bugs,