DRILL-6977: Improve Hive tests configuration
1. HiveTestBase data initialization moved to static block
to be initialized once for all derivatives.
2. Extracted Hive driver and storage plugin management from HiveTestDataGenerator
to HiveTestFixture class. This increased cohesion of generator and
added loose coupling between hive test configuration and data generation
tasks.
3. Replaced usage of Guava ImmutableLists with TestBaseViewSupport
helper methods by using standard JDK collections.
closes #1613
