Always use variable composer home instead of hard coded version

defaults/main.yml

@@ -4,12 +4,12 @@ composer_path: /usr/local/bin/composer
 composer_update: true
 composer_update_day: 20
 composer_path_env: False
-#composer_home_path: /opt/composer
+composer_home_path: /opt/composer
 composer_home_owner: root
 composer_home_group: root
 composer_global_packages: {}
 
-# Visit https://github.com/settings/applications 
+# Visit https://github.com/settings/applications
 # and generate personal access token
 composer_github_oauth: false
 composer_http_basic: false