Updated openstack/openstack
Project: openstack/oslo.db  f0153ca817e7e6c7a292cf635455902812453072

Added check for DB2 deadlock error

Currently, deadlock is only checked for in mysql and postgresql.
This adds a check for db2 deadlock

Fixes bug #1340793

Change-Id: Icef725ed75929ff13234ea58026e6bf0f2e2c852