Get rid of custom wrap_db_retry call in sync_allocations
Get rid of custom wrap_db_retry call in sync_allocations

Just for consistency, get rid of the last direct call to
wrap_db_retry and instead use neutron.db.api.retry_db_errors
in the sync_allocations code so we don't potentially get
bitten by slight inconsistencies between the two.

TrivialFix
Related-Bug: #1673243

Change-Id: I975c7d0ec84698d277acbbec6d9cfec5c03439aa

openstack/neutron,mahak/neutron,mahak/neutron,noironetworks/neutron,noironetworks/neutron,openstack/neutron,eayunstack/neutron,mahak/neutron,eayunstack/neutron,openstack/neutron,huntxu/neutron,huntxu/neutron