Otherwise, if a test in a spurious state, it consumes quite long time.
Let's fail earlier in such case.
This also drops an unnecessary calls of 'udevadm settle' in
testcase_nvme_basic() of TEST-64-UDEV-STORAGE.
Having these named differently than the test itself mostly creates
unecessary confusion and makes writing logic against the tests harder
so let's rename the testsuite-xx units and scripts to just use the
test name itself.