Description : Validity of X509 certificates generated through option
              --auto_generate_certs is 1 year. This is too short and
              may create surprises for users at the end of validity
              period.

Solution : Extending certificate validity to 10 years. This is inline
           with certificates generated by mysql_ssl_rsa_setup.

Reviewed-By: Kristofer Pettersson <kristofer.pettersson@oracle.com>
Reviewed-By: Georgi Kodinov <Georgi.Kodinov@Oracle.com>