Switched integration test to use ResolveTestFixture
REVIEW-4324: More integration test coverage for version listing
REVIEW-4324: Integration test coverage for version listing and --offline
REVIEW-4324: Improvements to version listing
- Removed ModuleVersions.AvailableVersion marker interface
- Replaced CachePolicy.mustRefreshDynamicVersion with CachePolicy.mustRefreshVersionList
- Renamed ModuleVersions -> ModuleVersionListing
REVIEW-4324: Better message when no version listing available in offline mode