Make the default RSA key size configurable
There is still a compiled-in default (currently 2048)
but this can be overridden in certmonger.conf with the
rsa_key_size setting in the default section. This will
allow users to increase the minimum size without changing
the default behavior for others.
https://pagure.io/certmonger/issue/211
Signed-off-by: Rob Crittenden <rcritten@redhat.com>