Update README doc to include missing test cases

[Colin Watson]

On Wed, Jun 26, 2019 at 03:42:21PM +0100, Stuart Henderson wrote:
> On 2019/06/26 14:33, Sharma, Jitendra wrote:
> > Could Pull request mentioned below in email be reviewed.
> > I am not sure, if asking for PR review is ok in this mailing list or there is another way for asking review of the patches. So, if I am missing some steps in getting patches reviewed, then please correct me.
> 
> That was only 2 days ago, you are expecting a lot from a volunteer project
> to be prodding people so soon...

I'd also suggest reading the project README before trying to send
patches to it, which says:

  Please read https://www.openssh.com/report.html for bug reporting
  instructions and note that we do not use Github for bug reporting or
  patch/pull-request management.

-- 
Colin Watson                                       [cjwatson at debian.org]