[PATCH v4] app/test: add support for skipping tests

[Aaron Conole]

Patrick Robb <probb at iol.unh.edu> writes:

> Thanks, this should help greatly going forward in the community lab.
>
> As it relates to our arm64 unit testing, I will give it a few days (or longer if needed) for next branches to rebase off of
> main and then re-enable arm64 unit testing with the eal_flags_file_prefix_autotest added to the skipped list. David
> explained to me on slack that this patch would not likely be a candidate for backporting, so of course LTS will be
> excluded. 

This is in testing area, and maybe it can be considered as an exception
if it allows for improved LTS testing.  CC'd Kevin.