Also, be less silent when installing, so possible errors are shown.
[extended tests]
Fixes#3005
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3007)
Add python cryptography testing instructions too
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2885)
