Run tempest smoke tests for ironic-.*-multinode job
Run tempest smoke tests for ironic-.*-multinode job

Now that tempest smoke will work for the ironic-.*-multinode job,
enable running of tempest smoke. Do this by removing the setting of
DEVSTACK_GATE_TEMPEST_REGEX=ironic

Change-Id: Id941886b354e023f99fa719f82f457d8df01f734

openstack-infra/project-config,openstack-infra/project-config