Bulk Operation

YARN-8762 Ensure flush after printing to log plus additional cleanup

YARN-8762 Container shell does not work when using yarn.nodemanager.linux-container-executor.nonsecure-mode.local-user is set

YARN-8762 Improve terminal message when connection is refused

YARN-8762 Add Terminal Link to Service component instance page for UI2

YARN-8762 Web browser close without proper exit can leak shell process

YARN-8762 Support sh shell for interactive container shell at command line

YARN-8762 Add flag to disable interactive shell

YARN-8762 Add ability to use interactive shell with normal yarn container

YARN-8762 Add xtermjs to YARN UI2

YARN-8762 Define a protocol exchange between websocket client and server for interactive shell

YARN-8762 Add security check for container user is same as websocket user

YARN-8762 Authentication Filter change to force security check

YARN-8762 Add Command Line interface to invoke interactive docker shell

YARN-8762 Container Executor C binary change to execute interactive docker command

YARN-8762 Container Executor change to create stdin/stdout pipeline

YARN-8762 Add WebSocket logic to the Node Manager web server to establish servlet