In a Docker environment, it is safer to terminate Fledge rather than to stop it

Signed-off-by: ashish-jabble <ashish@dianomic.com>

Author: ashish-jabble

tests/system/python/scripts/package/reset

@@ -10,7 +10,7 @@ else
 fi
 
 if [ "${FLEDGE_ENVIRONMENT}" == "docker" ]; then
-    /usr/local/fledge/bin/fledge stop
+    /usr/local/fledge/bin/fledge kill
     echo -e "YES\nYES" | /usr/local/fledge/bin/fledge reset || exit 1
     echo
     /usr/local/fledge/bin/fledge start