devel/py-odoo-addon-openupgrade-framework1{6,7,8}: New ports

OpenUpgrade Framework is a technical module that contains a number
of monkeypatches to improve the behaviour of Odoo when migrating
your database using the OpenUpgrade migration scripts:

• Prevent dropping columns or tables in the database when fields or models are obsoleted in the Odoo data model of the target release.
• When data records are deleted during the migration (such as views or other system records), this is done in a secure mode. If the deletion fails because of some unforeseen dependency, the deletion will be cancelled and a message is logged, after which the migration continues.
• Prevent a number of log messages that do not apply when using OpenUpgrade.
• Suppress log messages about failed view validation, which are to be expected during a migration.
• Run migration scripts for modules that are installed as new dependencies of upgraded modules (when there are such scripts for those particular modules)
• Production databases generated with demo data, will be transformed to non-demo ones. If you want to avoid that, you have to pass through the environment variable OPENUPGRADE_USE_DEMO, the value "yes".