Add new vm_availability_zone and use it for virtual environments

Change-Id: I4ee0abef632fdec03a6a673d28e23142e3e65861
diff --git a/tcp_tests/templates/_heat_environments/bm-ovs-cloud.env b/tcp_tests/templates/_heat_environments/bm-ovs-cloud.env
index 86d4085..9a801f4 100644
--- a/tcp_tests/templates/_heat_environments/bm-ovs-cloud.env
+++ b/tcp_tests/templates/_heat_environments/bm-ovs-cloud.env
@@ -32,6 +32,7 @@
   foundation_flavor: system.virtual.foundation
   key_pair: system_key_8133
   bm_availability_zone: BM
+  vm_availability_zone: nova
   net_public: public
 
   foundation_image: system.foundation