Fixes acquia#4397 to create the ci.blt.yml file by default.

src/Robo/Commands/Blt/UpdateCommand.php

@@ -51,8 +51,13 @@ public function initialize() {
    * @throws \Acquia\Blt\Robo\Exceptions\BltException
    */
   public function addToProject() {
+    // Initializes the project template / scaffold.
     $this->initializeBlt();
+    // Creates the blt/blt.yml file.
     $this->setProjectName();
+    // Places the blt/ci.blt.yml file.
+    $this->createCiConfig();
+    // Adds default BLT values into the project .gitignore file.
     $this->initGitignore();
     // Invoke command instead of calling method to ensure hooks run.
     $this->invokeCommand('internal:create-project:init-repo');
@@ -233,4 +238,19 @@ protected function setProjectName() {
     $yamlWriter->write($project_config);
   }
 
+  /**
+   * Sets project.name using the directory name of repo.root.
+   */
+  protected function createCiConfig() {
+    $result = $this->taskFilesystemStack()
+      ->copy($this->getConfigValue('blt.root') . '/scripts/blt/ci/internal/ci.yml', $this->getConfigValue('repo.root') . '/blt/ci.blt.yml', TRUE)
+      ->stopOnFail()
+      ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
+      ->run();
+
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not initialize the CI specific BLT file.");
+    }
+  }
+
 }