Comment 13 for bug 1436034

I've already manually upgraded glance_store to 0.1.12 (git clone) and upgraded it's dependencies (pip install).
Seems like this fixes an issue. There are traces in logs about unauthenticated sessions to vcenter and there are records about reconnections.

pip install enum34
pip install oslo.utils==1.2.0
pip install --upgrade oslo.config
pip install --upgrade oslo.vmware
This also has upgraded oslo.concurrency to 1.8.0

# pip search oslo.vmware
oslo.vmware - Oslo VMware library for OpenStack projects
  INSTALLED: 0.11.1 (latest)

# pip search oslo.concurrency
oslo.concurrency - oslo.concurrency library
  INSTALLED: 1.8.0 (latest)

I'm not sure that this upgrade doesn't break other functionality