Dry run updates module with -m flag

[jdell64]

Bug Report or Feature Request (mark with an x)

- [ x] bug report -> please search issues before submitting (I did)
- [ ] feature request

Versions.

@angular/cli: 1.0.0
node: 7.7.3
os: darwin x64
@angular/common: 4.0.1
@angular/compiler: 4.0.1
@angular/core: 4.0.1
@angular/forms: 4.0.1
@angular/http: 4.0.1
@angular/platform-browser: 4.0.1
@angular/platform-browser-dynamic: 4.0.1
@angular/router: 4.0.1
@angular/cli: 1.0.0
@angular/compiler-cli: 4.0.1
  
macOS Sierra

Repro steps.

50-207-252-218-static:angular-tour-of-heroes jeff$ ng g s data -m app.module -d
installing service
You specified the dry-run flag, so no changes will be written.
  create src/app/data.service.spec.ts
  create src/app/data.service.ts
  update src/app/app.module.ts

The log given by the failure.

The update src/app/app.module.ts file was updated even though the dry run flag was specified.

Desired functionality.

To not update.

Seems to be just the -d flag on services.

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