Comment 12 for bug 1651887

Reviewed: https://review.openstack.org/466196
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c589b76e13f54f8c0d753b1d2c4d4c2ef3399359
Submitter: Jenkins
Branch: stable/newton

commit c589b76e13f54f8c0d753b1d2c4d4c2ef3399359
Author: Kaitlin Farr <email address hidden>
Date: Fri Mar 10 18:09:49 2017 -0500

    Parse algorithm from cipher for ephemeral disk encryption

    Nova's keymgr implementation used to have default values
    for the algorithm and bit length. Castellan does not have
    default values, and when Castellan replaced keymgr in
    Ib563b0ea4b8b4bc1833bf52bf49a68546c384996, the parameters
    to the create_key method were not updated. This change
    parses the algorithm from the cipher value and passes it
    to Castellan's key manager interface.

    Conflicts:
          nova/conf/ephemeral_storage.py

    NOTE(mriedem): The conflicts are due to not having
    Ic8ea9b0852d5b6f5d8a468fe0a03d21e220a8913 in newton, which
    was a refactor/cleanup change in ocata. It's just preserved
    here for readability.

    Closes-Bug: #1651887
    Change-Id: Ib90bc7571aef59325be0efe123fcf12e86252b85
    (cherry picked from commit 1d3acad111c5106592b0921628480fcf41e0fb4c)
    (cherry picked from commit fcc931f4017ab4bb830ff645431edaa8a18bf880)