packaging: support both mysql and mariadb on EL8/EL9

Author: weizhouapache

packaging/centos7/cloud.spec

@@ -76,7 +76,7 @@ Requires: openssh-clients
 Requires: nfs-utils
 Requires: iproute
 Requires: wget
-Requires: mysql
+Requires: (mysql or mariadb)
 Requires: sudo
 Requires: /sbin/service
 Requires: /sbin/chkconfig