test against older drivers-tools

Author: blink1073

.evergreen/scripts/prepare-resources.sh

@@ -11,6 +11,9 @@ if [ "$PROJECT" = "drivers-tools" ]; then
     cp -R $PROJECT_DIRECTORY/ $DRIVERS_TOOLS
 else
     git clone https://github.com/mongodb-labs/drivers-evergreen-tools.git $DRIVERS_TOOLS
+    pushd $DRIVERS_TOOLS
+    git checkout 93b20d9660fa5ef82b63d541d5a6f86f80ba4503
+    popd
 fi
 echo "{ \"releases\": { \"default\": \"$MONGODB_BINARIES\" }}" >$MONGO_ORCHESTRATION_HOME/orchestration.config