Enable telemetry on ovs based virt envs

Change-Id: I9965f9990e0aea53add4959dbcaa200e24d650ec
diff --git a/tcp_tests/templates/_heat_environments/eu-cloud.env b/tcp_tests/templates/_heat_environments/eu-cloud.env
index e053283..7f670c5 100644
--- a/tcp_tests/templates/_heat_environments/eu-cloud.env
+++ b/tcp_tests/templates/_heat_environments/eu-cloud.env
@@ -19,6 +19,7 @@
   dbs_flavor: system.compact.openstack.database
   msg_flavor: system.compact.openstack.message_queue
   mon_flavor: system.compact.stacklight.server
+  mdb_flavor: system.compact.openstack.telemetry
   log_flavor: system.compact.stacklight.log
   mtr_flavor: system.compact.stacklight.telemetry
   cmp_flavor: system.virtual.openstack.compute