Add integration test over hdfs ufs.
redirect the stdout of tests to file
identation fix
Add an integration test for UnderfsUtil
Make UnderFilesystemCluster as abstract class and create another mock-localfscluster.
Add comment to explain the usage for UnderfsUtilIntegrationTest
Add some workaround to solve test failure caused by hdfs.read(byte[])
Only exclude the integration test related files in test-compile phase
To fix the bugs in JournalTest over ufs-hdfs
Add document for integration test profile.
Re-format for style and class member naming
Rename the MockLocalFilesystemCluster to LocalFilesystemCluster
Add integration test description in docs
Merge pull request #122 from GraceH/hdfstest

Add integration test over hdfs underfilesystem