glance requests from nova fail if there are too many endpoints in the service catalog

Fix proposed to branch: master
Review: https://review.openstack.org/210515

Fix proposed to branch: stable/kilo
Review: https://review.openstack.org/210557

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/210568

Reviewed: https://review.openstack.org/210515
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=4fa9bc1c544af30f167499284fc3e8ff6b65d23f
Submitter: Jenkins
Branch: master

commit 4fa9bc1c544af30f167499284fc3e8ff6b65d23f
Author: ZHU ZHU <email address hidden>
Date: Fri Aug 7 09:09:08 2015 -0700

    Don't pass the service catalog when making glance requests

    If your service catalog has too many endpoints in it, passing this in
    the request to glance can result in a 400 because the header is too big.

    This isn't even necessary to pass to glance since we use the auth_token
    middleware.

    Per bknudson: "Any service using the auth_token middleware has no use
    for the x-service-catalog header. All that auth_token middleware uses is
    x-auth-token. The auth_token middleware will actually strip the
    x-service-catalog from the request before it sends the request on to the
    rest of the pipeline, so the application will never see it."

    Closes-Bug: #1482699

    Change-Id: I204c6f61194bef6eba01ab0525bc80fa2e323acd

Reviewed: https://review.openstack.org/210557
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=9724d506bd9c478b757874b1de80f4e9fb7d7743
Submitter: Jenkins
Branch: stable/kilo

commit 9724d506bd9c478b757874b1de80f4e9fb7d7743
Author: ZHU ZHU <email address hidden>
Date: Fri Aug 7 09:09:08 2015 -0700

    Don't pass the service catalog when making glance requests

    If your service catalog has too many endpoints in it, passing this in
    the request to glance can result in a 400 because the header is too big.

    This isn't even necessary to pass to glance since we use the auth_token
    middleware.

    Per bknudson: "Any service using the auth_token middleware has no use
    for the x-service-catalog header. All that auth_token middleware uses is
    x-auth-token. The auth_token middleware will actually strip the
    x-service-catalog from the request before it sends the request on to the
    rest of the pipeline, so the application will never see it."

    Closes-Bug: #1482699

    Change-Id: I204c6f61194bef6eba01ab0525bc80fa2e323acd
    (cherry picked from commit 4fa9bc1c544af30f167499284fc3e8ff6b65d23f)

Reviewed: https://review.openstack.org/210568
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=77d33a33d662ab5ae85265f5f9c9968dc8fa8e5b
Submitter: Jenkins
Branch: stable/juno

commit 77d33a33d662ab5ae85265f5f9c9968dc8fa8e5b
Author: ZHU ZHU <email address hidden>
Date: Fri Aug 7 09:09:08 2015 -0700

    Don't pass the service catalog when making glance requests

    If your service catalog has too many endpoints in it, passing this in
    the request to glance can result in a 400 because the header is too big.

    This isn't even necessary to pass to glance since we use the auth_token
    middleware.

    Per bknudson: "Any service using the auth_token middleware has no use
    for the x-service-catalog header. All that auth_token middleware uses is
    x-auth-token. The auth_token middleware will actually strip the
    x-service-catalog from the request before it sends the request on to the
    rest of the pipeline, so the application will never see it."

    Conflicts:
            nova/tests/unit/image/test_glance.py
            nova/tests/unit/virt/xenapi/image/test_glance.py
            nova/tests/unit/virt/xenapi/test_vm_utils.py

    NOTE(mriedem): The conflicts in the tests are due to the test modules
    all being moved in kilo, otherwise there are no differences.

    Closes-Bug: #1482699

    Change-Id: I204c6f61194bef6eba01ab0525bc80fa2e323acd
    (cherry picked from commit 4fa9bc1c544af30f167499284fc3e8ff6b65d23f)
    (cherry picked from commit 9724d506bd9c478b757874b1de80f4e9fb7d7743)