Revert "Removes wildcard entry for mysql permissions"

This reverts commit 809b7b1be0df547b1ea984c6b4c0021038709344

See discussion in Bug: #1252267 for the reason why to revert 
this: The way we configure in the guide, we need to have
access via the FQDN.
Merge "Revert "Removes wildcard entry for mysql permissions""