Comment 2 for bug 1359049

Reviewed: https://review.openstack.org/115787
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=3ebbdec7eeb29258ae6a535562073b48d5b051d0
Submitter: Jenkins
Branch: master

commit 3ebbdec7eeb29258ae6a535562073b48d5b051d0
Author: Clark Boylan <email address hidden>
Date: Wed Aug 20 14:18:44 2014 -0700

    Handle sqlalchemy connection strings with drivers

    SqlAlchemy connection strings may specify a driver using the +foo suffix
    syntax in the url scheme. Ceilometer should accomodate this type of
    schema when looking up sqlalchemy drivers with the stevedore driver
    manager.

    Fix this by splitting connection string schemes on '+' and retrieving
    only the first element in the resulting list. Doing the entrypoint
    lookup on this element will preserve the existing behavior in loading
    sqlalchemy drivers and should be a noop for other backend types.

    Change-Id: Ieec5a4c47e8498a533d4e6954682a9bbe10bd4d9
    Fixes-bug: 1359049