Issue #4446: Fixing logrotate config file.

This issue switches from "cp" to "install" for the logrotate file,
with the option to specify the mode.  Also uses the name "influxdb"
instead of "influxd".

package.sh

@@ -471,7 +471,7 @@ if [ $? -ne 0 ]; then
     cleanup_exit 1
 fi
 
-cp $LOGROTATE $TMP_WORK_DIR/$LOGROTATE_DIR/influxd
+install -m 644 $LOGROTATE $TMP_WORK_DIR/$LOGROTATE_DIR/influxdb
 if [ $? -ne 0 ]; then
     echo "Failed to copy logrotate configuration to packaging directory -- aborting."
     cleanup_exit 1