LU-10073 tests: re-enable lnet selftest smoke test for PPC + ARM

LU-10073 tests: re-enable lnet selftest smoke test for PPC + ARM

LNet selftest has failed on platforms with 64K pages. Recent work
by Alexy Lyashkov should have resolved these issues. Lets enable
the lnet selftest to valid these changes.

Test-Parameters: trivial clientdistro=el8.5 clientarch=aarch64 testlist=lnet-selftest
Test-Parameters: trivial clientdistro=el8.5 clientarch=ppc64le testlist=lnet-selftest

Change-Id: I97684101ea2f90bb41f452955d5f864ca35d61ec
Signed-off-by: James Simmons <jsimmons@infradead.org>
Reviewed-on: https://review.whamcloud.com/38857
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: xinliang <xinliang.liu@linaro.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>