[TF] Use vMX image with backed configuration

We cannot inject confgiuration file in EU cloud as
'personality' is deprected. Also vMX image has no cloud-init.

Related-PROD: PRODX-20668
Change-Id: Icb121966584677550198203aef700704f0bb00b4
diff --git a/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml b/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml
index 714ae8c..51d726a 100644
--- a/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml
+++ b/de/heat-templates/env/mstr1-wrkr3-cmp2-ntw3-vmx.yaml
@@ -19,7 +19,7 @@
   # vmx parameters
   vmx_linux_img: vPFC-20170216
   vmx_linux_flav: vfp.lite
-  vmx_junos_img: vmx-x86-64-17.1R1.8
+  vmx_junos_img: vmx-re-x86-64-17.1R1.8
   vmx_junos_flav: vcp.lite
   vmx_gateway_ip: 10.10.0.1