Merge pull request #60 from AppScale/testing

Release 1.6.5
Merge pull request #96 from AppScale/testing

Merged changes from 1.6.5 to 1.6.6
Merge pull request #153 from AppScale/testing

Release 1.6.7
added in cert signing mocks
updated mocks for getting serving URL
Merge pull request #154 from shatterednirvana/fixed-unit-tests

Fixed unit tests