oauth feature does not work well with openssl1.1

[beorn-]

Debian Stretch uses:

libboost 1.62 and openssl 1.1

Whenever you try to authenticate against google oauth2 APIs you get in the hindsight logs:

[error] "Auth.OAuthService: handleToken(): stream truncated"

This looks very much like https://svn.boost.org/trac/boost/ticket/12710