Notify error not called on upload errors in V2

The 'upload' method in glance/api/v2/image_data.py catches a couple of
exceptions, but does not send notifications for any of them. They should
also be sending notifications as is being done in v1.

Fixes: Bug #1217837
Change-Id: Ie38307f514c1716dce31403d9ef57eae8290450d
Merge "Notify error not called on upload errors in V2"