Install attr test suite and run it as ptest.
ext test cases need depend on specific filesystem. So exclude them
order to make ptest all pass.
(From OE-Core rev: 4395504e5f2af16e108a67962ab7cbcab26aa444)
Signed-off-by: Chong Lu <Chong.Lu@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
