blktests v4 tests/nvme: add tests for error logging

[Alan Adamson]

Test nvme error logging by injecting errors. Kernel must have FAULT_INJECTION
and FAULT_INJECTION_DEBUG_FS configured to use error injector. Tests can be
run with or without NVME_VERBOSE_ERRORS configured.

These test verify the functionality delivered by the follow:
        commit bd83fe6f2cd2 ("nvme: add verbose error logging")

V2 - Update from suggestions from shinichiro.kawasaki at wdc.com
V3 - Add error injector helper functions to nvme/rc
V4 - Comments from shinichiro.kawasaki at wdc.com 

Alan Adamson (2):
  tests/nvme: add helper routine to use error injector
  tests/nvme: add tests for error logging

 tests/nvme/039     | 153 +++++++++++++++++++++++++++++++++++++++++++++
 tests/nvme/039.out |   7 +++
 tests/nvme/rc      |  44 +++++++++++++
 3 files changed, 204 insertions(+)
 create mode 100755 tests/nvme/039
 create mode 100644 tests/nvme/039.out

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2.27.0