Fix missing cachetool_args (#192)

* Cannot use --web option

The cachetool has a --web option. However, this cannot be used because --fcgi= is always prefixed in front of the options.

Adding cachetool_args allows you to customise all arguments.

* Set default value

Author: trsteel88

recipe/cachetool.php

@@ -8,6 +8,7 @@
 namespace Deployer;
 
 set('cachetool', '');
+set('cachetool_args', '');
 set('bin/cachetool', function(){
 	return run("{{bin/php}} -r \"echo version_compare(phpversion(), '7.1') == -1 ? 'cachetool-3.2.1.phar' : 'cachetool.phar';\"");
 });