src: re-add 1024-bit SSL certs removed by f9456a2

this fixes a problem where connecting to AWS services
would report an untrusted cert error.

Fixes: https://github.com/joyent/node/issues/8894
PR-URL: https://github.com/joyent/node/pull/8904
Reviewed-By: Timothy J Fontaine <tjfontaine@gmail.com>
Reviewed-By: Julien Gilli <julien.gilli@joyent.com>