Added processing /ec2 URL

With config option NOVA_USE_MOD_WSGI=True nova-ec2-api handles
requests on /ec2 URL.

Change-Id: I0c2e99bf8b5e5cf53cd176685b206038a4b0f78b
diff --git a/files/apache-nova-ec2-api.template b/files/apache-nova-ec2-api.template
index 235d958..6443567 100644
--- a/files/apache-nova-ec2-api.template
+++ b/files/apache-nova-ec2-api.template
@@ -14,3 +14,12 @@
     %SSLCERTFILE%
     %SSLKEYFILE%
 </VirtualHost>
+
+Alias /ec2 %PUBLICWSGI%
+<Location /ec2>
+    SetHandler wsgi-script
+    Options +ExecCGI
+    WSGIProcessGroup nova-ec2-api
+    WSGIApplicationGroup %{GLOBAL}
+    WSGIPassAuthorization On
+</Location>