ACCUMULO-3031 Conditionally ignore known-bad test due to JDK bug

  Skip test execution when building on a known bad JDK version in the range
  (1.7.0_60, 1.7.0_72). This bug is expected to be fixed in 1.7.0_72.
ACCUMULO-3204 Remove old, unused classes
ACCUMULO-3197 Remove deprecated items from Instance

  Partially addresses ACCUMULO-3199 by removing the getConfiguration() method
  from Instance, which is prone to misuse.
ACCUMULO-3197 Remove deprecated code