Instance fails to boot when injecting a file.

[Dave Johnston]

Instances fail to boot when attempting to inject file with the error "No valid host was found"

This is a single node installed with devstack. The system is running on Ubuntu 12.04 and the Folsom release.

Booting a VM using the following command fails:
 nova boot --file /root/test_data.txt=/home/openstack/test_data.txt --flavor "m1.tiny" --image "cirros-0.3.1-x86_64-uec" --key-name=openstack MyTest02

running
 nova show MyTest02 shows the following error
nova show MyTest02
+-------------------------------------+------------------------------------------------------------------------------------+
| Property | Value |
+-------------------------------------+------------------------------------------------------------------------------------+
| OS-EXT-STS:vm_state | error |

| fault | {u'message': u'NoValidHost', u'code': 500, u'details': u'No valid host was found. |
| | ', u'created': u'2013-03-25T21:15:24Z'} |