ssmtp: Add AuthUser and AuthPass options.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Forgot semicolon. (M)

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Merge pull request #144 from the-kenny/ssmtp-user-pass

ssmtp: Add AuthUser and AuthPass options.