util/testing: Allow jenkins builders to skip testing areas

With the addition of the clang tests, the jenkins builds are taking a
really long time to run the tests.  This change allows the
"what-jenkins-does" build to be split into separate builds on jenkins.

Additionally, some jenkins builds like coverity don't need (or want)
to build clang or even the linters.

Update help with the variables.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I0f8ac68c1bc8f8ff9be62d80db850355e742ee74
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69495
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

0 files changed, 0 insertions, 0 deletions