[libgovirt] Force use of v3 REST API

[Christophe Fergeau <teuf src gnome org>]

commit 948ce7168efa7c1fca5f1f6390f94191d709590b
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Thu Jun 16 11:10:27 2016 +0200

    Force use of v3 REST API
    
    oVirt 4.0 introduced a slightly incompatible REST API, see
    https://github.com/oVirt/ovirt-engine/tree/master/backend/manager/modules/restapi
    A short term fix is to send a "Version: 3" header with each request,
    which this commit does. This might stop working with oVirt 4.1 though.
    
    Longer term fix is tracked in
    https://bugzilla.gnome.org/show_bug.cgi?id=767724

 govirt/ovirt-proxy.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/govirt/ovirt-proxy.c b/govirt/ovirt-proxy.c
index 08e42d2..efe3284 100644
--- a/govirt/ovirt-proxy.c
+++ b/govirt/ovirt-proxy.c
@@ -902,6 +902,7 @@ static void ovirt_proxy_constructed(GObject *gobject)
         g_object_set(OVIRT_PROXY(gobject), "ssl-strict", FALSE, NULL);
     }
     ovirt_proxy_add_header(OVIRT_PROXY(gobject), "Prefer", "persistent-auth");
+    ovirt_proxy_add_header(OVIRT_PROXY(gobject), "Version", "3");
 
     /* Chain up to the parent class */
     if (G_OBJECT_CLASS(ovirt_proxy_parent_class)->constructed)