Add npm-shrinkwrap and package-lock files from npm 5.0.3 (node 8.1.2)

[roblourens]

No description provided.

[Tyriar]

Adding @joaomoreno as he was the gatekeeper for this sort of stuff in the past I believe.

[roblourens]

https://docs.npmjs.com/files/package-locks

https://docs.npmjs.com/files/package-lock.json

[felixfbecker]

package-lock.json is the new npm-shrinkwrap.json (the only difference is that npm-shrinkwrap.json will get published to npm). You can upgrade by simply running npm install (which will migrate the shrinkwrap files), then renaming all npm-shrinkwrap.json to package-lock.json (they have the same schema). But they are not backward-compatible, so Travis would need to npm i -g npm@5 in before_install.

[joaomoreno]

I will definitely not have time for this in June. If someone wants to pick it up and make sure all our builds (TFS, Travis, AppVeyour) would still work with this, be my guest.

[felixfbecker]

@joaomoreno did it #29576