Added logging for v3 sdk

[srinathnarayanan]

Added logging mesages to the SDK

• Logger config file can be passed in through an environment varaible
• Default config file added as well
• Writing to console and file is present as default.
• Logging currently present for
  • Beginning of all operations
  • latency logger per request
  • Logs for cross partition queries indicating which partition id is being hit
  • Error logs on all error paths in the SDK
  • Logging on retries

[christopheranderson]

Don't need this anymore