-#Location of all individual simulators for DFC
-SIM_ROOT=$WORKSPACE/archives/dfc/integration/test/mocks/datafilecollector-testharness
+
+if [ -z "$SIM_ROOT" ]
+then
+ git clone --depth 1 https://gerrit.onap.org/r/integration -b master
+ #Location of all individual simulators for DFC
+ echo "Determine SIM_ROOT based on the WORKSPACE"
+ SIM_ROOT=$WORKSPACE/archives/dfc/integration/test/mocks/datafilecollector-testharness
+
+ rm $SIM_ROOT/simulator-group/consul/consul/cbs_localhost_config.hcl || true
+else
+ echo "Using SIM_ROOT from environmental variable: " $SIM_ROOT
+fi
+
+#Prepare DFC config volume
+mkdir $SIM_ROOT/simulator-group/dfc_config_volume || true
+