AppNexus E2E: Improved helper and general cleanup
AppNexus E2E: Breakup monolithic object operations test
 * Create individual tests for object create/update/delete
 * Refactor campaign profile create to compose an object instead of using a JSON template
Merge branch 'master' of https://github.com/RareCrowds/OpenAdStack
AppNexus E2E: Additional targeting tests
 * Add campaign profile tests
 * More client cleanup