fix(sfx): Include ngHttp in SFX bundle

[alfonso-presa]

Seems ngHttp doesn't have it's own SFX bundle, but it doesn't seem to be included in angular2's SFX bundle neither.

I've added it in the angular2's SFX bundle as having it's own SFX bundle was causing some issues (see: #3898 and #3890).

Fixes: #3934

[googlebot]

We found a Contributor License Agreement for you (the sender of this pull request), but were unable to find agreements for the commit author(s). If you authored these, maybe you used a different email address in the git commits than was used to sign the CLA (login here to double check)? If these were authored by someone else, then they will need to sign a CLA as well, and confirm that they're okay with these being contributed to Google.

[googlebot]

CLAs look good, thanks!

[tbosch]

@jeffbcross Is this correct?

[mary-poppins]

Merging PR #3933 on behalf of @jeffbcross to branch presubmit-jeffbcross-pr-3933.

[jeffbcross]

Thanks @alfonso-presa, merging!

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