Scary error message in red when shutting down an instance

[afbjorklund]

Description

We get an error from gvisor-tap-vsock logrus, when shutting down an instance:

INFO[0000] [hostagent] Shutting down VZ                 
ERRO[0000] [hostagent] dhcp: unhandled message type: RELEASE 
INFO[0000] [hostagent] [VZ] - vm state change: stopped  

It should be changed from Error to Debug, so that it disappears from the log.

https://github.com/containers/gvisor-tap-vsock

• Weird errors during shutdown of VM #3776

[jandubois]

I've filed containers/gvisor-tap-vsock#529

[jandubois]

Upstream PR has been merged; now we need to wait for them to make another release.