Add composer 1.6.2, remove composer 1.6.1
Add composer 1.6.2, remove composer 1.6.1

source url: https://getcomposer.org/download/1.6.2/composer.phar
source sha256: 6ec386528e64186dfe4e3a68a4be57992f931459209fd3d45dde64f5efb25276

[#154089509]

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