Migration to version 15.0

[oihane]

Todo

https://github.com/OCA/maintainer-tools/wiki/Migration-to-version-15.0

Modules to migrate

• project_task_meeting
• project_task_milestone
• project_task_service_partner
• project_vehicle

Missing module? Check https://github.com/OCA/maintainer-tools/wiki/%5BFAQ%5D-Missing-modules-in-migration-issue-list