Test ironic-dbsync online_data_migrations
Test ironic-dbsync online_data_migrations

Run ironic-dbsync online_data_migrations on single node grenade
right after usual dbsync.
Do not set pin_relase_version for single node grenade as we
do cold upgrade and it is not required.

Related-Bug: 1526283
Related-Bug: 1502887
Change-Id: I2e331252aeb66376c2d6cc3c16b6de0aefca5434

pshchelo/ironic,openstack/ironic,openstack/ironic,pshchelo/ironic