Merge pull request #2522 from bubaflub/non_exclusive_vnc_access

Do not require exclusive VNC access while buildling

builder/qemu/step_type_boot_command.go

@@ -52,7 +52,7 @@ func (s *stepTypeBootCommand) Run(state multistep.StateBag) multistep.StepAction
 	}
 	defer nc.Close()
 
-	c, err := vnc.Client(nc, &vnc.ClientConfig{Exclusive: true})
+	c, err := vnc.Client(nc, &vnc.ClientConfig{Exclusive: false})
 	if err != nil {
 		err := fmt.Errorf("Error handshaking with VNC: %s", err)
 		state.Put("error", err)

builder/vmware/common/step_type_boot_command.go

@@ -57,7 +57,7 @@ func (s *StepTypeBootCommand) Run(state multistep.StateBag) multistep.StepAction
 	}
 	defer nc.Close()
 
-	c, err := vnc.Client(nc, &vnc.ClientConfig{Exclusive: true})
+	c, err := vnc.Client(nc, &vnc.ClientConfig{Exclusive: false})
 	if err != nil {
 		err := fmt.Errorf("Error handshaking with VNC: %s", err)
 		state.Put("error", err)