Ng generate doesn't create css files when -sw is used to create the project #10722

Angular CLI: 6.0.0
Node: 8.10.0
OS: win32 x64
Angular: 6.0.0
... animations, cli, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.6.0
@angular-devkit/build-angular     0.6.0
@angular-devkit/build-optimizer   0.6.0
@angular-devkit/core              0.6.0
@angular-devkit/schematics        0.6.0
@ngtools/webpack                  6.0.0
@schematics/angular               0.6.0
@schematics/update                0.6.0
rxjs                              6.1.0
typescript                        2.7.2
webpack                           4.6.0```

### Repro steps
<!--
Simple steps to reproduce this bug.
Please include: commands run, packages added, related code changes.
A link to a sample repo would help too.
-->
* ng new name-of-project -sw
* cd name-of-project
* ng generate component name-of-component

CREATE src/app/name-of-component/name-of-component.component.html (36 bytes)
CREATE src/app/name-of-component/name-of-component.component.spec.ts (693 bytes)
CREATE src/app/name-of-component/name-of-component.component.ts (273 bytes)
UPDATE src/app/app.module.ts (518 bytes)

It doesn't create the css file

CREATE src/app/name-of-component/name-of-component.component.spec.ts (693 bytes)
CREATE src/app/name-of-component/name-of-component.component.ts (311 bytes)
CREATE src/app/name-of-component/name-of-component.component.css (0 bytes)
UPDATE src/app/app.module.ts (518 bytes)

When I use generate component expect to get a whole new component, but this is like if i used a flag for create styles in the .ts file