Add composer 1.5.3, remove composer 1.5.2
Add composer 1.5.3, remove composer 1.5.2

source url: https://getcomposer.org/download/1.5.3/composer.phar
source sha256: f50e3b1d7daa6afc532341e52735db32819310cb2f63cb166f69dc7e074a657e

[#153293766]

cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,cloudfoundry/php-buildpack,Orange-OpenSource/cf-php-build-pack,Orange-OpenSource/cf-php-build-pack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack,Orange-OpenSource/cf-php-build-pack,cf-identity/php-buildpack,cf-identity/php-buildpack,cf-identity/php-buildpack,cf-identity/php-buildpack,cloudfoundry/php-buildpack,cf-identity/php-buildpack