kernel-tests: [PATCH] Add script shell wrapper to check if the wanted test was not tested for current version

[Charles-Antoine Couret]

Hello,
I submitted this patch because it is complicated for me to remember if
my current kernel was tested by kernel tests and what tests have been
executed too.
To avoid to verify manually or to execute twice the same test, I wrote
a script wrapper to check that automatically before executing the
wanted test.

I don't merge this script into runtests.sh to allow multiple
executions of the test if needed (although it is useless, I think).

Regards,
Charles-Antoine Couret