gitdm: Add some more companies

Employees from these companies have made contributions to
libvirt over the past few releases.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>

docs/gitdm/companies/others

@@ -14,6 +14,7 @@ citrix.com Citrix
 cloudwatt.com Cloudwatt
 codethink.co.uk Codethink
 cumulusnetworks.com Cumulus Networks
+dataductus.se Data Ductus
 datagravity.com DataGravity
 dell.com Dell
 diateam.net DIATEAM
@@ -67,6 +68,7 @@ otb.bg Open Technologies Bulgaria
 outscale.com OUTSCALE
 parallels.com Parallels
 petalogix.com PetaLogix
+quobyte.com Quobyte
 ravellosystems.com Ravello Systems
 samsung.com Samsung
 sde.cz SDE
@@ -89,6 +91,7 @@ virtualopensystems.com Virtual Open Systems
 websense.com Websense
 wiktel.com Wikstrom Telephone Company
 windriver.com Wind River
+winhong.com Winhong
 xmission.com XMission
 xs4all.nl XS4ALL
 yadro.com YADRO