* release/1.6.3: (41 commits)
Update changelog
Update version number
Using string_types for python3 compatibility.
Using basestring instead of str so that unicode values are also accepted.
Remove Python 2.6 from CI
removed comments
drop support for python 2.6
fix test_service authentication tests
fix test_service authentication tests
fix test_service tests
update server cert file
fix test failures
update splunk version to 6.6 and 7.0
update travis.yml
update travis splunk version to 6.6 and 7.0
Added carry returns back to sum.map.output
One more fix
Fix last two unit tests
distrubuted commands are streaming
Strip new line chars to normalize different line separators
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