[Bug 39419] New: Fix the 'Failure running script in VM' errors

https://bugs.winehq.org/show_bug.cgi?id=39419

Bug ID: 39419
           Summary: Fix the 'Failure running script in VM' errors
           Product: Wine-Testbot
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

There are two very common 'boterror' types:

Failure running script in VM: the "nc -q0 '10.42.42.133' '4242'"
    command returned 1
and
    Failure running script in VM: network read timed out
    (Connect:AgentVersion.h:0/9)

Both seem to correspond to a network issue and both seem to almost exclusively
and systematically happen with the w864 and w1064 VMs when running either a 32
or 64 bit WineTest job (i.e. running the full suite).