Comment 2 for bug 1687374

Hi,
I can not read a lot of the report as due to the compression some filter seems have to dropped the cyryllic chars to be unreadable.
But from what I found anyway is about the conflicting "/usr/share/mysql/errmsg-utf8.txt"

Percona, MariaDB and Mysql are somewhat mutually exclusive forks of the same thing.
In your case I assume that you are hit by the fact that they all own that file:
$ apt-file search /usr/share/mysql/errmsg-utf8.txt
mariadb-server-10.0: /usr/share/mysql/errmsg-utf8.txt
mysql-server-5.6: /usr/share/mysql/errmsg-utf8.txt
percona-server-server-5.6: /usr/share/mysql/errmsg-utf8.txt
percona-xtradb-cluster-server-5.6: /usr/share/mysql/errmsg-utf8.txt

Of these only one can be working at any given time.

I took a zesty system installed percona-server-server and then mysql-server.
And just as I expected on installying mysql the percona would be removed.

So in your case some local setup issue is blocking the normal mechanisms to work.
Could you outline a few more details and probable he output of:
$ dpkg -S /usr/share/mysql/errmsg-utf8.txt