User Impact

• Client metadata will now be a promise that is awaited at connect() time 
  • This is because capturing docker metadata is an async process

Acceptance Criteria

Implementation Requirements

• Changes to ClientMetadata
  • Mark ClientMetadata interface as internal
  • Make env?.name property optional
  • Add in  env?.container?.orchestrator, and env?.container?.runtime properties to interface
• Refactor addContainerMetadata to be inside of makeClientMetadata 
• Delete extendedClientMetadata property from codebase
  • This is because clientMetadata will now hold container data 
  • await clientMetadata instead of extendedClientMetadata in prepareHandshakeDocument

Testing Requirements

• Make sure existing tests pass

Documentation Requirements

• Update API for client metadata