[openstack-helm] Vasyl Saienko as new core reviewer

Hi dear helmers, I would like to suggest a new member of the Openstack-Helm core team. Vasyl Saienko from Mirantis has been actively contributing to the project recently. He prepared lots of improvements for Mariadb, Memcached, Libvirt, Rabbitmq and other charts. He also made plenty of valuable code reviews (28 reviews for the last 90 days). Please share you opinion on this. -- Best regards, Kozhukalov Vladimir