[dts] [PATCH V4 1/3] framework: check the python version

[Tu, Lijuan]

> > > implement a method to check the python version of tester and the
> > > server that run dts.
> > > If the version is python2, print a warning message.
> > >
> > > Signed-off-by: yufengmx <yufengx.mo at intel.com>
> >
> > An update of your comment is needed.
> What comment is needed?

Your patch is check if the version is greater than 3.6.9.