Comment 7 for bug 1202404

Reviewed: https://review.openstack.org/37687
Committed: http://github.com/openstack/nova/commit/0608c6f936ef7466114128fbc4b623c5058b66ed
Submitter: Jenkins
Branch: master

commit 0608c6f936ef7466114128fbc4b623c5058b66ed
Author: Burt Holzman <email address hidden>
Date: Wed Jul 17 17:03:27 2013 -0500

    Change EC2 client tokens to use system_metadata

    An EC2 client token is created as a result of RunInstances. The initial
    implementation called create_tags which uses per-instance metadata.
    However, we can't update per-instance metadata while an instance is still
    building because put the metadata updates in the messaging queue.

    We avoid this problem by using system_metadata instead of per-instance
    metadata. As an added bonus, users can't tamper with the token via the tags
    API.

    Fixes bug #1202404

    Change-Id: I8ff28d75154a30fe3b521926453b9e9cbdd9fead