Issue #3228095 by tedbow: Switch to packagist for composer_stager

composer.json

@@ -11,7 +11,8 @@
     "source": "http://cgit.drupalcode.org/automatic_updates"
   },
   "require": {
-    "ext-json": "*"
+    "ext-json": "*",
+    "php-tuf/composer-stager": "0.1.1"
   },
   "config": {
     "platform": {

drupalci.yml

-build:
-  assessment:
-    validate_codebase:
-      phplint:
-      container_composer:
-      csslint:
-      eslint:
-      phpcs:
-    testing:
-      container_command:
-        # Currently composer-stager is not on packagist so can't do this in composer.json.
-        # @todo Remove this add dependency directly to composer.json
-        commands: "cd ${SOURCE_DIR} && sudo -u www-data /usr/local/bin/composer config repositories.composer-stager vcs git@github.com:php-tuf/composer-stager.git && /usr/local/bin/composer require php-tuf/composer-stager:0.1.1"
-      run_tests.standard:
-        types: 'Simpletest,PHPUnit-Unit,PHPUnit-Kernel,PHPUnit-Functional'
-      run_tests.js:
-        concurrency: 1
-        types: 'PHPUnit-FunctionalJavascript'
-      nightwatchjs: