test script is getting deprecation warnings

[tfoote]

We'll need to upgrade at some point.

Step 8/13 : RUN npm install -g gulp gulp-cli graceful-fs gulp-stylus axis
 ---> Running in 45fa1d16065f
npm WARN deprecated gulp-util@3.0.8: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated graceful-fs@3.0.11: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js
npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated minimatch@0.2.14: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated graceful-fs@1.2.3: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js

I'm surprised as this was a forced fresh build, but in npm speeds Xenial is out of date...