sslutils used to load only the first certificate when it was given a
client certificate file.
Added tests for check_http to connect to a http server that expects a
client certificate (simple and with chain).
Signed-off-by: Tobias Wiese <tobias@tobiaswiese.com>
the certificate used to test expired http checks is to old to be used
with recent ssl libraries and results in:
> SSL routines:SSL_CTX_use_certificate:ee key too small
unfortunatly the error is only visible when setting $IO::Socket::SSL::DEBUG in
the check_http.t file.
