Service Worker not working with CLI 1.5.0

[mohammedzamakhan]

Bug Report or Feature Request (mark with an x)

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- [ ] feature request

Versions.

Angular CLI: 1.5.0
Node: 8.6.0
OS: darwin x64
Angular: 5.0.0

Repro steps.

Created a new project, added @angular/service-worker, and set the serviceWorker flag, and ran ng build --prod, and got this error

ng build --prod
The installed version of @angular/service-worker is 5.0.0. This version of the CLI
requires the @angular/service-worker version to satisfy >= 1.0.0-beta.5 < 2.0.0. Please upgrade
your service worker version.
Error: The installed version of @angular/service-worker is 5.0.0. This version of the CLI
requires the @angular/service-worker version to satisfy >= 1.0.0-beta.5 < 2.0.0. Please upgrade
your service worker version.

[csentis]

Seems tracked in #8080 for 1.6.0 already.

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