fix(@angular/cli): Make prefix work when using aliases

fixes #7522

Author: Brocco

packages/@angular/cli/commands/generate.ts

@@ -145,7 +145,7 @@ export default Command.extend({
     const cwd = this.project.root;
     const schematicName = rawArgs[0];
 
-    if (schematicName === 'component' || schematicName === 'directive') {
+    if (['component', 'c', 'directive', 'd'].indexOf(schematicName) !== -1) {
       if (commandOptions.prefix === undefined) {
         commandOptions.prefix = appConfig.prefix;
       }

tests/e2e/tests/generate/component/component-prefix.ts

@@ -15,6 +15,9 @@ export default function() {
     .then(() => ng('generate', 'component', 'test-component'))
     .then(() => expectFileToMatch(join(componentDir, 'test-component.component.ts'),
       /selector: 'pre-/))
+    .then(() => ng('g', 'c', 'alias'))
+    .then(() => expectFileToMatch(join('src', 'app', 'alias', 'alias.component.ts'),
+      /selector: 'pre-/))
 
     // Try to run the unit tests.
     .then(() => ng('test', '--single-run'));