[PATCH] Simplify scripts/cross-test-ssh.sh configuration.

[Florian Weimer]

* Carlos O'Donell:

> With modern ssh clients and daemons it is required to use AcceptEnv and
> SendEnv configuration options to correctly support testing the DSO sort
> ordering tests.  This requirement is present because
> scripts/dso-ordering-test.py injects GLIBC_TUNABLES to the left of the
> ${test_wrapper_env} and so it must both be sent by the ssh client and
> accepted by the ssh daemon.  This requirement is removed in this change
> and the injected GLIBC_TUNABLES is placed after ${run_program_env} and
> so still correctly provides the override that the test requires.
> This is similar to existing tests like elf/tst-pathopt.sh,
> elf/tst-rtld-load-self.sh, and locale/tst-locale-locpath.sh.
>
> Tested that it fixes two failures when cross-testing on aarch64 with
> scripts/cross-test-ssh.sh and an ssh client and daemon that do not pass
> GLIBC_TUNABLES. Without this fix such a configuration will report the
> following failures (since the GLIBC_TUNABLES not preserved):
> FAIL: elf/tst-bz15311
> FAIL: elf/tst-bz28937

Nice explanation in the commit message.  Looks okay to me.

Reviewed-by: Florian Weimer <fweimer@redhat.com>

Thanks,
Florian