MySQL Router ships (in RPM format):

 /usr/lib64/libmysqlharness.so.1
 /usr/lib64/libmysqlrouter.so.1
 /usr/lib64/libmysqlrouter_http.so.1

and similar for DEBs.

/usr/lib64 is public location, this means these libs are available for
all applications on the system.

However, this is not the case, these libs are for Router only and should be
moved to:

  /usr/lib64/mysqlrouter/private/libmysqlharness.so.1
  /usr/lib64/mysqlrouter/private/libmysqlrouter.so.1
  /usr/lib64/mysqlrouter/private/libmysqlrouter_http.so.1

Change-Id: I8638d523565b62c78ef31fcc582f35c3da0f7392