OpenTSDB 2.2.0 RC2

• Version 2.2.0 RC2 (2015-11-09)

Noteworthy Changes:

• Allow overriding the metric and tag UID widths via config file instead of
  having to modify the source code.

Bug Fixes:

• OOM handling script now handles multiple TSDs installed on the same host.
• Fix a bug where queries never return if an exception is thrown from the
  storage layer.
• Fix random metric UID assignment in the CLI tool.
• Fix for meta data sync when salting is enabled.