use glusterfs-hadoop hdfs compatible filesystem unit test

Signed-off-by: rootfs <hchen@redhat.com>
add test resource into pom

Signed-off-by: rootfs <hchen@redhat.com>
fix problems from unit tests

Signed-off-by: rootfs <hchen@redhat.com>
Merge pull request #2 from rootfs/wip-unit-test-merge

Add HDFS compatible FS unit tests; fix issues detected by unit tests