vmctl: print root user in status owner field

[Klemens Nanni]

With "owner root:wheel" (any group) the `vmctl status' output
will omit the "root" part in the OWNER column:

        vm "generic" {
                owner "root:vms"
                ...
        }

        $ vmctl status
           ID   PID VCPUS  MAXMEM  CURMEM     TTY        OWNER    STATE NAME
            1     -     1    512M       -       -         :vms  stopped generic

It only omits it if the user is root, presumably to say "only the group
matters".

I find this special case confusing as it looks incomplete, instead just
print whatever is configured: 

        $ ./obj/vmctl status
           ID   PID VCPUS  MAXMEM  CURMEM     TTY        OWNER    STATE NAME
            1     -     1    512M       -       -     root:vms  stopped generic

Feedback? OK?


Index: vmctl.c
===================================================================
RCS file: /cvs/src/usr.sbin/vmctl/vmctl.c,v
retrieving revision 1.72
diff -u -p -r1.72 vmctl.c
--- vmctl.c     12 Dec 2019 03:53:38 -0000      1.72
+++ vmctl.c     14 Dec 2019 00:54:23 -0000
@@ -768,8 +768,6 @@ print_vm_info(struct vmop_info_result *l
                                (void)strlcpy(user, name, sizeof(user));
                        /* get group name */
                        if (vmi->vir_gid != -1) {
-                               if (vmi->vir_uid == 0)
-                                       *user = '\0';
                                name = group_from_gid(vmi->vir_gid, 1);
                                if (name == NULL)
                                        (void)snprintf(group, sizeof(group),