rather than just printing out success or failure at the end of the test
only, print out "OK" or "ERROR" for each individual test case within the
overall test. As part of this, ensure each case returns 0 on success and
any other value on failure.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Ciara Power <ciara.power@intel.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Acked-by: Chengwen Feng <fengchengwen@huawei.com>