SHDP-357 Change store tests to use minicluster

- Dataset tests using kite not changed due to SHDP-358
- Using base class AbstractHadoopClusterTests to bring
  support from minicluster together with @MiniHadoopCluster and
  related @ContextConfiguration in test classes.
merge
SHDP-357 Fixes for potentially failing tests

- TextFileStoreCtxTests and SequenceFileStoreCtxTests rely on
  executor to kick in and close/rollover to next file while
  we wait between writer. Added bigger wait after the writes.
- Changed tmp dir for those tests from #{systemProperties['java.io.tmpdir']}
  to /tmp.
Merge branch 'master' of https://github.com/spring-projects/spring-hadoop
add minicluster