LU-10073 tests: stop running smoke test

LU-10073 tests: stop running smoke test

lnet-selftest test smoke is failing at a high rate
when tested with ARM clients and when run with Ubuntu
clients. Stop running this test for ARM and Ubuntu
clients until we find a solution.

Lustre-change: https://review.whamcloud.com/34543
Lustre-commit: ddf3c0416790f74e10abc39543843e0de49b176e

Test-Parameters: trivial clientarch=aarch64 testlist=lnet-selftest
Test-Parameters: clientdistro=ubuntu1804 testlist=lnet-selftest
Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: I5c59b3a5dd42c9b6afcf5e0d1ce17e49efc1b44a
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sonia Sharma <sharmaso@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/34814
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>