Backport test install fix (#7280)

Author: achamayou

tests/test_install.sh

@@ -40,10 +40,11 @@ rm -rf "$working_dir"
 mkdir -p "$working_dir"
 cd "$working_dir"
 
+export BETTER_EXCEPTIONS=1
+
 # Start ephemeral network in the background
-network_live_time=120
-timeout --signal=SIGINT --kill-after=${network_live_time}s --preserve-status ${network_live_time}s \
-"$INSTALL_PREFIX"/bin/sandbox.sh --verbose &
+network_live_time=60
+"$INSTALL_PREFIX"/bin/sandbox.sh --auto-shutdown --auto-shutdown-delay-s ${network_live_time} --verbose &
 
 if poll_for_service_open ${network_live_time}; then
     echo "Error: Timeout waiting for service to open"
@@ -69,9 +70,8 @@ python ../../../python/ledger_tutorial.py ./workspace/sandbox_0/0.ledger
 # Recover network
 cp -r ./workspace/sandbox_0/0.ledger .
 
-recovered_network_live_time=120
-timeout --signal=SIGINT --kill-after=${recovered_network_live_time}s --preserve-status ${recovered_network_live_time}s \
-"$INSTALL_PREFIX"/bin/sandbox.sh --verbose \
+recovered_network_live_time=10
+"$INSTALL_PREFIX"/bin/sandbox.sh --auto-shutdown --auto-shutdown-delay-s ${recovered_network_live_time} --verbose  \
     --recover \
     --ledger-dir 0.ledger \
     --common-dir ./workspace/sandbox_common/