[dts] [PATCH V1] fix enable verbose dts log duplicate info in file and console

[Tu, Lijuan]

> *. debug level is lower than info, when enable dts verbose, both info and debug
> message will be print and logged twice
> 
> Signed-off-by: Xiao Qimai <qimaix.xiao at intel.com>
> ---
>  framework/ssh_connection.py | 4 ++--

Applied