openssh: Add fixes for CVEs reported for openssh

Applied patch for CVE-2020-14145
Link: https://anongit.mindrot.org/openssh.git/patch/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d

Also, whitelisted below CVEs:

1.CVE-2020-15778:
As per upstream, because of the way scp is based on a historical
protocol called rcp which relies on that style of argument passing
and therefore encounters expansion problems. Making changes to how
the scp command line works breaks the pattern used by scp consumers.
Upstream therefore recommends the use of rsync in the place of
scp for better security. https://bugzilla.redhat.com/show_bug.cgi?id=1860487

2.CVE-2008-3844: It was reported in OpenSSH on Red Hat Enterprise Linux
and certain packages may have been compromised. This CVE is not
applicable as our source is OpenBSD.
Links:
https://securitytracker.com/id?1020730
https://www.securityfocus.com/bid/30794

Also, for CVE-2007-2768 no fix is available yet as it's unavoidable
drawback of using one time passwords as per
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2007-2768
Also it is marked as unimportant on debian
https://security-tracker.debian.org/tracker/CVE-2007-2768



Mailed to CPE to update database for CVE-2020-15778, CVE-2008-3844
and CVE-2007-2768. We can upstream CVE-2020-14145 till we recieve
response from CPE.

Signed-off-by: Sana Kazi <Sana.Kazi@kpit.com>
Signed-off-by: Nisha Parrakat <nishaparrakat@gmail.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>