Remove -u root as mysql is executed with root user
As openstack installation guides suggest to run mysql with root shell
user, mysql will not ask for password, so in
controller-install-*.rst "-u root -p" is useless.
Related-Bug:
@@ -107,7 +107,7 @@ far beyond the scope of this documentation.
.. code-block:: console
- $ mysql -u root -p
+ # mysql
#. Enter the MySQL root user's password when prompted.
#. To configure the MySQL database, create the dash database.
