Incorrect exception handling when deletion encryption keys

[Eric Harney]

When deleting a volume, the volume encryption key is deleted from the key manager. If this fails, the log message tries to print the "msg" field from the exception. For CinderExceptions, this works. For other types of exceptions, this field does not exist.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/455749

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/455749
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=6e2d8fd0664d468228d78ceea0e96e10d560be6a
Submitter: Jenkins
Branch: master

commit 6e2d8fd0664d468228d78ceea0e96e10d560be6a
Author: Eric Harney <email address hidden>
Date: Tue Apr 11 11:25:09 2017 -0400

    Fix encryption key deletion error handling on volume delete

    e.msg is only present for CinderExceptions, not all exception
    types.

    Closes-Bug: #1681874

    Change-Id: I02601ae2a9ba95ab7145b86e24a094272f4cfbf6

[Kaitlin Farr (kaitlin-farr)]

This was a duplicate of https://bugs.launchpad.net/cinder/+bug/1631305

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/ocata
Review: https://review.openstack.org/463861

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/463861
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=8a090e5510792d5989e9215ecb0c9cf7a3ac849c
Submitter: Jenkins
Branch: stable/ocata

commit 8a090e5510792d5989e9215ecb0c9cf7a3ac849c
Author: Eric Harney <email address hidden>
Date: Tue Apr 11 11:25:09 2017 -0400

    Fix encryption key deletion error handling on volume delete

    e.msg is only present for CinderExceptions, not all exception
    types.

    Closes-Bug: #1681874

    Change-Id: I02601ae2a9ba95ab7145b86e24a094272f4cfbf6
    (cherry picked from commit 6e2d8fd0664d468228d78ceea0e96e10d560be6a)
    Conflicts:
     cinder/volume/api.py

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 11.0.0.0b2 development milestone.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 10.0.3 release.