ZF-5300: Zend_Soap_Server support features and cache_wsdl options

Description

PHP's SoapClient and SoapServer have an option called "features", which is currently not supported. Zend_Soap_Server ignores the option, and Zend_Soap_Client throws an Exception.

The situation for cache_wsdl is similar, although there's a php.ini setting to work around the problem.

Comments

Added setter and getter functions for both 'features' and 'cache_wsdl' of the Zend_Soap_Server