preserving cls in chained promises is broken in nodejs >= 8.0

[gms1]

see: nodejs/node#13583

[gms1]

NOTE: currently it is expected that the tests are failing, because the node version for this bug is not yet released, but another (npm?) issue is currently breaking the (travis) build:
gulpjs/gulp#1967
npm/npm#16677

[gms1]

I had to delete the package-lock.json to be able to run the test on travis and to see the expected test results:
https://travis-ci.org/gms1/node-async-context/builds/243524322
now waiting for a node upgrade having a fix for this issue

[gms1]

merged:
nodejs/node#13585
hopefully in next release: 8.1.3

[gms1]

fixed in nodejs 8.2.1