latest cli doesn't honor sass extension

[sfabriece]

Bug Report or Feature Request (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request

Versions.

@angular/cli: 1.4.2
node: 8.4.0
os: win32 x64

Repro steps.

In a project that uses scss as style.
Generate a new component.
The css for the component will be .css instead of .scss.

The log given by the failure.

Desired functionality.

correct extension used for css

Mention any other details that might be useful.

[AhsanAyaz]

Duplicate of #7624, #7644, #7647,& #7522

[Brocco]

Closing as a duplicate.

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