Invalid ec2 error code for absent volumes and snapshots

[Feodor Tersin]

ec2-api returns InvalidVolumeID.NotFound and InvalidSnapshotID.NotFound for absent volumes and snapshots.
But AWS returns InvalidVolume.NotFound and InvalidSnapshot.NotFound as it is documented in http://docs.aws.amazon.com/AWSEC2/latest/APIReference/api-error-codes.html

For example this affects Tempest. Tempest expects correct (AWS version) errors in waitXXXStatus functions and raises an error if other error cames for absent objects. So it make difficult writting tests.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/95913

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/95913
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=bb23a3730e5b2281e0a223a86c89f2a0bfcb4897
Submitter: Jenkins
Branch: master

commit bb23a3730e5b2281e0a223a86c89f2a0bfcb4897
Author: Feodor Tersin <email address hidden>
Date: Wed May 28 01:18:24 2014 +0400

    Fix EC2 not found errors for volumes and snapshots.

    According to AWS docs
    (http://docs.aws.amazon.com/AWSEC2/latest/APIReference/
    api-error-codes.html)

    Change-Id: I43af230b975263bb2a14e0cc0bd8718f55bd8a55
    Closes-Bug: #1323813