Bug#907135: boxbackup: FTBFS with OpenSSL 1.1.1

[Kurt Roeckx <kurt@roeckx.be>]

The log shows:
> ERROR:   SSL or crypto error: loading certificates from testfiles/clientCerts.pem: error:140AB18F:SSL routines:SSL_CTX_use_certificate:ee key too small

This is caused by a Debian change to require a 2048 bit key by
default instead of a 1024 bit key. Since this is just for a test,
you can either just replace the certificate with a larger key,
or lower the security level for the test from 2 to 1. I suggest
you just create a new certificate.


Kurt