Bring us up to date with upstream's 1.17.1 release. Among other
things, it includes commit c2497d46b4
which fixes several issues that affect running the test suite under
Travis CI. Hopefully those will work transitively for us as well.
[extended tests]
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10690)
master