[et-mgmt-tools] [PATCH] Enable to send F10 key to the guest OS.

[Hiroyuki Kaguchi]

The F10 key is assigned as the accelerator of the menu bar in the OS(Windows or
Linux).
On this account it is necessary to send the F10 key to the guest OS.
However, with the existing specifications of virt-viewer, the F10 key is
assigned to the accelerator
of the menu bar of virt-viewer and we cannot send the F10 key to the guest OS.
So, I change virt-viewer to be able to send F10 key to the guest OS when
virt-viewer grabs the keyboard.

Thanks,
Signed-off-by: Hiroyuki Kaguchi <fj7025cf at aa.jp.fujitsu.com>