Updated openstack/openstack
Project: openstack/nova  cc2171be6795e87fd7a1beec22d982da6391c4e8
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Make metadata server use objects for Instance and Security Groups

This makes the metadata service fetch an Instance object to
do its work, and use the SecurityGroupList object to avoid
calling directly to conductor's API for those two things.

Related to blueprint compute-manager-objects

Change-Id: Ia12f48227eb2380f5da93313cd4045577d8857c9