Description of problem:
You can run "openstack baremetal introspection status $node_id -f value -c finished" on nodes that are no longer registered in ironic.


Version-Release number of selected component (if applicable):
openstack-ironic-api-2015.1-dev684.el7.centos.noarch
python-rdomanager-oscplugin-0.0.7-dev6.el7.centos.noarch


How reproducible:
100%


Steps to Reproduce:
1. Register and discover nodes
2. Store the node ids in an environment variable by running "node_ids=$(ironic node-list | tail -n +4 | head -n -1 | awk -F "| " '{print $2}')"
3. Delete all nodes by running "for node_id in $node_ids; do ironic node-delete $node_id; done"
4. Check the introspection status of the deleted nodes by "for node_id in $node_ids; do openstack baremetal introspection status $node_id -f value -c finished; done"


Actual results:
Info for the deleted nodes is still available in the system.


Expected results:
You should get an error when trying to query on nodes that no longer exist.