[et-mgmt-tools] [PATCH] Strengthen port number validation

[Masayuki Sunou]

Hi

Installation fails when port number used by other processes is set 
to --vncport of virt-install, because graphical console is not displayed.
The same problem occurs when port number exceeds upper bound. 

One of patches fixes to request re-input when port number used is set.
 --> check_vncport_used.patch
Other fixes to output error message when port number exceeds upper bound. 
 --> check_vncport_upperbound.patch

Signed-off-by: Masayuki Sunou <fj1826dm at aa.jp.fujitsu.com>

Thanks,
Masayuki Sunou.
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