examples/ct: add dumps of test certs
examples/ct: add dumps of test certs

Including an OpenSSL dump of the contents of the certificates
(with `openssl x509 -text -noout -in <cert>.pem`) makes
debugging cert-related issues easier.

RJPercival/certificate-transparency-go,daviddrysdale/certificate-transparency-go,google/certificate-transparency-go,daviddrysdale/certificate-transparency-go,google/certificate-transparency-go,RJPercival/certificate-transparency-go,RJPercival/certificate-transparency-go,daviddrysdale/certificate-transparency-go,google/certificate-transparency-go