Add oslo::db to dependency chain
Add oslo::db to dependency chain

All db settings should be applied and all releated packages should be
installed before dbsync starts.

Change-Id: If3a7708f2b48d17195e62a01f46eee2e87155a98

openstack/puppet-ironic,fuel-infra/puppet-ironic,openstack/puppet-ironic,fuel-infra/puppet-ironic,fuel-infra/puppet-ironic,openstack/puppet-ironic