* spotify/master: (25 commits)
  Version 2.2.0
  Add tests for hashing parameters (spotify#1719)
  Update call to iteritems in luigi/tools/deps: deprecated in Python 3 (spotify#1749)
  Reset terminal colors in external_program (spotify#1742)
  Caches get_autoconfig_client on a per-thread basis
  Fix bug with GCSFlagTarget
  Add additional event handlers to tasks (spotify#1698)
  Reduce number of get_params calls in common_params.
  Removes redundant function definitions from rpc and server (spotify#1734)
  Fix salesforce default content type (spotify#1724)
  Rename MockTarget class variable _fn to path
  Remove MockTarget path property
  Deprecated LocalTarget fn propery
  Add note about underscore in parameter names (spotify#1729)
  Remove tracking url callback hack (spotify#1722)
  Consistent Luigi spelling in docs (spotify#1723)
  Update example_top_artists.rst (spotify#1662)
  Add combiner to docstrings in mrrunner
  Add luigi-deps-tree visualising tool (spotify#1680)
  Adding release step for Debian packages. (spotify#1718)
  ...

* track exit codes

* only throw on essential containers non-zero

* handle ECS container reason failure, add tests for ECSTask failures

* reorganize task status tracking a bit

* add AWS_DEFAULT_PROFILE env var to tox passthru

* spotify/master: (24 commits)
  Add DateSecondParameter to parameter.py (spotify#1779)
  tox: Specify sphinx dependency better
  flake8: Unbreak travis build
  Excludes .tox from flake8 to prevent checking third-party libraries (spotify#1785)
  README: Remove monthly downloads badge
  Rename CentralPlannerScheduler to Scheduler (spotify#1781)
  Remove abstract Scheduler class (spotify#1778)
  Assistants: Don't affect longevity of tasks (spotify#1772)
  tests: Skip a inttermittently failing s3 test (spotify#1777)
  Update retcodes to handle new cases (spotify#1771)
  tests: Fix warning in remote_scheduler_test.py (spotify#1774)
  Remove sitecustomize file (spotify#1755)
  Fix exist method for ftp server
  Update copy() to return number and size of files copied
  Remove the confusing "dummy_test_module" directory (spotify#1756)
  Disable codecov comments on GitHub PRs (spotify#1754)
  Fix "owner_email" log message. (spotify#1762)
  docs: Install sphinx 1.4.4 in setup.py (spotify#1761)
  docs: Set minimum versions for sphinx (spotify#1760)
  Normalize ListParameter to be Immutable (spotify#1759)
  ...