Fix the use of tests/simulation/run_node.sh

tests/simulation/start.sh

@@ -7,10 +7,6 @@ set -eu
 
 # Set a default value for the env vars usually supplied by nimbus Makefile
 
-export NUM_VALIDATORS=${VALIDATORS:-100}
-export NUM_NODES=${NODES:-9}
-export NUM_MISSING_NODES=${MISSING_NODES:-1}
-
 cd "$SIM_ROOT"
 mkdir -p "$SIMULATION_DIR"
 mkdir -p "$VALIDATORS_DIR"

tests/simulation/vars.sh

@@ -14,6 +14,10 @@ cd - &>/dev/null
 : ${SKIP_BUILDS:=""}
 : ${BUILD_OUTPUTS_DIR:="$GIT_ROOT/build"}
 
+NUM_VALIDATORS=${VALIDATORS:-100}
+NUM_NODES=${NODES:-9}
+NUM_MISSING_NODES=${MISSING_NODES:-1}
+
 SIMULATION_DIR="${SIM_ROOT}/data"
 VALIDATORS_DIR="${SIM_ROOT}/validators"
 SNAPSHOT_FILE="${SIMULATION_DIR}/state_snapshot.json"