Update vsrx image

* add ssh key
* set default route
* remove public iface from vrf

Related-Bug: PRODX-11809
Change-Id: I9217be04861301c3bdce457f734d66d9a3443366
diff --git a/de/heat-templates/env/mstr1-wrkr3-cmp2-gtw0-vsrx1.yaml b/de/heat-templates/env/mstr1-wrkr3-cmp2-gtw0-vsrx1.yaml
index a3a67f2..4be72ba 100644
--- a/de/heat-templates/env/mstr1-wrkr3-cmp2-gtw0-vsrx1.yaml
+++ b/de/heat-templates/env/mstr1-wrkr3-cmp2-gtw0-vsrx1.yaml
@@ -11,7 +11,7 @@
 parameters:
   image: bionic-server-cloudimg-amd64-20190612
   public_net_id: public
-  vsrx_image: mos-vsrx-3nets-tunnel
+  vsrx_image: mos-vsrx-3nets-tunnel-v2
   masters_size: 0
   worker_size: 3
   cmp_size: 2