[travis-ci] Composer install --ignore-platform-reqs
[travis-ci] Composer install --ignore-platform-reqs

Remove platform constraint requirements when install. Tests already skip the execution if the required plafform requirement is not present

amcsi/zend-log,zendframework/zend-log,nikolaposa/zend-log,MadCat34/zend-log,Xerkus/zend-log,zendframework/zend-log,Xerkus/zend-log,3makkk/zend-log,MadCat34/zend-log,amcsi/zend-log,3makkk/zend-log,Maks3w/zend-log,Maks3w/zend-log,nikolaposa/zend-log