tutorials.mtu: move .scenario file to setup()

Move creating of /bp/.scenario to setup()

Author: msune

tutorials/net/mtu/common.sh

@@ -121,4 +121,5 @@ setup_scenario() {
 	fi
 
 	cd ${1} && ./setup.sh
+	echo ${1} > /bp/.scenario
 }

tutorials/net/mtu/entrypoint.sh

@@ -13,10 +13,6 @@ SCENARIO=${1:-scenario1}
 log_info "Starting scenario '${SCENARIO}'..."
 setup_scenario ${SCENARIO}
 
-echo ${SCENARIO} > /bp/.scenario
-
 # Spawn interactive shell
-
 cat /bp/BANNER
-
 exec bash -i