LU-12662 tests: Add new pjdfstest into tests

LU-12662 tests: Add new pjdfstest into tests

Create a new POSIX test suite based on pjdfstest.

Test-Parameters: trivial
Test-Parameters: fstype=ldiskfs testlist=pjdfstest
Test-Parameters: fstype=zfs testlist=pjdfstest
Change-Id: Iec37e2248ce5ccf89319aaffb3ead9b407ad1931
Signed-off-by: Wei Liu <sarah@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/35841
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: James Nunez <jnunez@whamcloud.com>