Open Stack

As part of a bug fix [1], the internal 
ComputeVirtAPI.wait_for_instance_event interface is changing to no 
longer accept event names that are strings, and will now require the 
(name, tag) tuple form which all of the in-tree virt drivers are already 
using.

If you have an out of tree driver that uses this interface, heads up 
that you'll need to be using the tuple form if you are not already doing so.

[1] https://review.openstack.org/#/c/558059/

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Thanks,

Matt