Enable host check for webpack-dev-server

Merged Mike Greiling requested to merge mg-enable-webpack-host-check into master

What does this MR do?

Removes the disableHostCheck option for webpack-dev-server.

Note: This will currently break websocket connections when webpack-dev-server has a different hostname from the GDK rails hostname. I am opening a separate MR for gitlab-development-kit which will set webpack's hostname to match by default and produce a warning when they do not match.

Screenshots (strongly suggested)

n/a

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

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  • Label as security and @ mention @gitlab-com/gl-security/appsec
  • The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • Security reports checked/validated by a reviewer from the AppSec team