Amazon SSM Agent - Release 3.0.655.0 - 2021-01-26

• Add feature to retain hostname during domain join
• Add delay to pty start failure for session-worker
• Add nil pointer check on shell command for session-worker
• Add shlex to vendor which is used to parse session interactive command input for session-worker
• Change log level for IPC not readable message
• Change v2 agent to use v3 agent executor
• Fix network connectivity issues on RHEL8
• Fix race condition where first message is dropped when session plugin's message handler is not ready
• Fix file channel protocol test cases
• Fix blocking http call when certificates are not available
• Move aws cli installation out of /tmp for domain join plugin
• Update boolean attributes in Session Document to accept both string and bool values
• Upgrade vendor dependencies and build to use go1.15.7