incorrect return of get_raw_events() in sqlalchemy implementation

[Lianhao Lu]

According to the storage/base.py, the abstract method Connection.get_raw_events() should return an iterable of raw events data created by ceilometer.collecotr.meter.meter_message_from_counter().

But in current sqlalchemy implementation, the returned raw events data by get_raw_events() is not compatible with that created by meter_message_from_counter().

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/20014
Committed: http://github.com/openstack/ceilometer/commit/83ef54a891890b82eb208be28d8790b2bbf5f74a
Submitter: Jenkins
Branch: master

commit 83ef54a891890b82eb208be28d8790b2bbf5f74a
Author: Lianhao Lu <email address hidden>
Date: Fri Jan 18 14:27:21 2013 +0800

    Higher level test for db backends.

    This patch implemented the blueprint test-db-backends, and also fixed
    the bug 1085111.

    Note: Some test cases in RawEventTest are still db backend dependendant
    due to the bug 1101100. We could move them to base class after we
    resolve that bug.

    Change-Id: Ic32a7f0719d34a008cc21ddd59c9912d9a90db24

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/20215
Committed: http://github.com/openstack/ceilometer/commit/ce1a4b57a544917a19d08f0bf0d02fc97f5e3bec
Submitter: Jenkins
Branch: master

commit ce1a4b57a544917a19d08f0bf0d02fc97f5e3bec
Author: Lianhao Lu <email address hidden>
Date: Tue Jan 22 16:45:48 2013 +0800

    Corrected get_raw_event() in sqlalchemy.

    This fixed bug 1101100. The returned dict of get_raw_event() in sqlalchemy
    should be consistent with one generated by
    collector.meter.meter_message_from_counter().

    Change-Id: I6948fdbd0c1e03d46be7d3a05faa53ca70698ce8