[#82827566] Update ChangeLog to start feature "Write unit tests for testing variable overriding"

https://www.pivotaltracker.com/story/show/82827566
[#82827566] Added pull request url to ChangeLog

https://github.com/zvelo/envetcd/pull/3
[#82827582] Update ChangeLog to start feature "Improve test coverage to an appropriate level"

https://www.pivotaltracker.com/story/show/82827582
[#82827582] Added pull request url to ChangeLog

https://github.com/zvelo/envetcd/pull/4
Added test application and flagSetter
Added tests for newEtcdConfig and getClient
Added test for getKeyPairs
Added tests for getEnpoints and getTransport
added runner test
modified testing etcd keypair values
Merge branch 'feature/82827582_karldominguez_improve_test_coverage_to_an_appropriate_level' into feature/82827566_karldominguez_write_unit_tests_for_testing_variable_overriding

Conflicts:
	ChangeLog
Added tests for overriding values
Added etcd service
testing wercker box
testing wercker box
Added getting etcd address from wercker box
testing wercker box
Modified test to comply with wercker box
Corrected test value
testing wercker box