Streaming logs to CloudWatch strips ANSI characters

Hi there!

The SSM agent strips ANSI characters when streaming logs to CloudWatch. This makes it impossible to view an accurate log of the output of a session when using applications which use ANSI control characters; e.g. the output of `top`.

It would be great if it was possible to stream logs to CloudWatch without having these control characters stripped, so that the log could be view and "replayed" at a later date.

Start by tracing the SSM agent path that streams session output to CloudWatch and identify where ANSI control characters are removed. Check how streamed logs are currently encoded and stored, then verify that output containing ANSI characters can be viewed or replayed without those characters being stripped.

Written by the indexing model from the issue text.