Daniël van Eeden 95ba07e01b More user friendly error reporting for privileges
Related Issue: https://github.com/github/gh-ost/issues/136

New output:
```
2016-08-05 11:39:07 DEBUG Privileges: Super: true, REPLICATION SLAVE: false, ALL on *.*: false, ALL on `sakila`.*: true
2016-08-05 11:39:07 ERROR User has insufficient privileges for migration. Needed: SUPER, REPLICATION SLAVE and ALL on `sakila`.*
2016-08-05 11:39:07 FATAL 2016-08-05 11:39:07 ERROR User has insufficient privileges for migration. Needed: SUPER, REPLICATION SLAVE and ALL on `sakila`.*
```
2016-08-05 11:41:36 +02:00
..
2016-07-16 08:12:19 -06:00
2016-07-25 15:17:30 +02:00