Refactored token management into OauthClient.
Merge pull request #188 from scottfrederick/refactor-oauth

Refactored token management into OauthClient.
Provided a way to ignore integration tests that can only be run as an admin user.
Fix stale reference to old artifact ID
Released 1.0.3.
Bumping versions for next snapshot.
Merge pull request #189 from celkins/patch-1

Fix stale reference to old artifact ID
Changed default mysql service name and plan used for integration testing to match what the CI environment requires.