gitdm: Add missing entries

A few new companies have contributed to libvirt since the last
time the gitdm configuration was updated.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

docs/gitdm/companies/others

@@ -10,6 +10,7 @@ av-test.de AV-TEST
 b1-systems.de B1 Systems
 baidu.com Baidu
 brightbox.co.uk Brightbox
+bytedance.com ByteDance
 cisco.com Cisco
 citrix.com Citrix
 cloudwatt.com Cloudwatt
@@ -38,11 +39,13 @@ hitachi.com Hitachi
 hoster-ok.com hoster-ok.com
 hp.com HP
 huawei.com Huawei
+hupstream.com hupstream
 hygon.cn Hygon
 inktank.com Inktank Storage
 intel.com Intel
 intellilink.co.jp NTT DATA INTELLILINK
 invisiblethingslab.com Invisible Things Lab
+ixsystems.com iXsystems
 jtan.com JTAN
 juniper.net Juniper Networks
 laposte.net La Poste