Damian Dabrowski ebc07a44e7 Database connection pooling improvements
- Implemented new variable ``connection_recycle_time`` responsible for SQLAlchemy's connection recycling
- Set new default values for db pooling variables which are inherited from the global ones.

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/819424
Change-Id: Ie9591c96d1e5c8f4dcf04524c04056934ceb00db
2021-12-02 19:21:50 +01:00
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