If like me, you still want to do a manual installation then you can download them from http://wiki.zenoss.org/download/core/mysql/
In my opinion Zenoss dev team should consider solving this problem before we run into trouble. Someday a nasty unforeseen vulnerability could be discovered and we will find ourselves in un uncomfortable position beiong forced to use an unpatched version of MySQL which is a no-go on most corporate networks. It is OK to stay with MySQL v5.5 but being locked into 5.5.27 or earlier is simply looking for trouble.
