added a test file for CloudStackClient class
added a test file for CloudStackClient class

phansys/cloudstack-php-client,myENA/cloudstack-php-client,qpleple/cloudstack-php-client,phansys/cloudstack-php-client,dcarbone/cloudstack-php-client,dcarbone/cloudstack-php-client,myENA/cloudstack-php-client,jasonhancock/cloudstack-php-client,jasonhancock/cloudstack-php-client