ws: Don't fail test-webservice if mock-sshd fails
ws: Don't fail test-webservice if mock-sshd fails

We're not testing mock-sshd. If the functionality in
test-webservice works, then that's good. mock-sshd can
exit and fail in different ways depending on timing.

Closes #3891
Reviewed-by: Peter <a316049dd34607c62d4611d63ab22a6454add223@redhat.com>

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