An earlier commit started transitioning opendmarc to use postgres, but
this was incomplete. This patch reverts that change and uses mysql for
the reporting database.
Other changes:
* Do not maintain a copy of the database import schema. A copy is
included in the distribution in /usr/share/doc, so that is used
instead.
* The configuration file is replaced with the distribution's sample
configuration. A second patch will restore the actual configuration.
This will make the changes easier to see if the default configuraton
file changes in future versions of opendmarc.
Remove all configuration for MySQL and configure PostgreSQL as the main
database.
All *_mysql_* options have been changed to *_db_* options.
Postgres requires the database user to have a password in order to
connect via localhost. The db_admin_password option is used to set the
password of the admin user (usually postgres).