Add phpcs config back to the defaults.yml so that this doesn't break …

…existing installs.

defaults.yml

@@ -218,6 +218,27 @@ phplint:
   # Path to a file where each line is a pattern matching files to lint.
   includesfile: "${build.thebuild.dir}/defaults/standard/phplint.txt"
 
+# Configuration for using PHP_CodeSniffer to review code according to the Drupal coding
+# standards.
+#
+# DEPRECATED - to be removed in the-build 4.2
+# This configuration is replaced by defaults/install/phpcs.xml.
+#
+# @see https://www.drupal.org/docs/develop/standards
+# @see https://github.com/squizlabs/PHP_CodeSniffer
+# @see https://www.drupal.org/project/coder
+#
+# These values are used in the defaults/build.xml template:
+#   $> phpcs --standard=${phpcs.standard} --ignore=${phpcs.ignore} ${phpcs.directories}
+phpcs:
+  # Path to a PHP_CodeSniffer standard file.
+  standard: "${build.dir}/vendor/drupal/coder/coder_sniffer/Drupal/ruleset.xml"
+
+  # Space-separated list of directories to review.
+  directories: "${drupal.root}/modules/custom ${drupal.root}/themes/custom"
+
+  # Comma-separated list of extensions to check in the PHP_CodeSniffer review.
+  extensions: "php,module,inc,install,test,profile,theme,css,info,txt,yml,js"
 
 # Configuration for using PHP Mess Detector to check for general PHP best practices,
 # unused variables, and to analyze complexity.