Call update_docker_ps  in __monitor_vm_events to reduce the potential for races
Call update_docker_ps  in __monitor_vm_events to reduce the potential for races

Otherwise we may miss events.
This also has the positive side effect that it simplifies the code.

Signed-off-by: Robert Breker <bfcd7039ca4b92386f0756a1d5e67ea4ff23cfe0@citrix.com>

olivierlambert/xscontainer,xenserver/xscontainer,xenserver/xscontainer,robertbreker/xscontainer,olivierlambert/xscontainer,robertbreker/xscontainer