Bug fixes

1. Do not swallow exception in Service.Send
2. Set segmentation default to none
3. Use "authorization/roles"
A private class rename
Added unit test and fixed code
Added unit test and fixed code
Merge branch 'feature/misc-fixes' of https://github.com/splunk/splunk-sdk-csharp into feature/misc-fixes

Conflicts:
	UnitTests/SearchTest.cs
Removed unnecessary try catch in HttpService.Send
Changes from code review feedback.
Code comments change from code review
Merge remote-tracking branch 'origin/develop' into feature/misc-fixes