Test stage in the toolchain uses node v0.10 but deployed app uses node 4.4

[jakepeyser]

@l2fprod commented on Wed Jun 29 2016

We should at least run the test with the latest Node version available in the toolchain.

From https://new-console.ng.bluemix.net/docs/services/DeliveryPipeline/deploy_var.html#deliverypipeline_resources,
this means 4.2.2. This can be enabled by changing the stage script and adding:

export PATH=/opt/IBM/node-v4.2/bin:$PATH

[jakepeyser]

I am going to use nvm to download 4.4.x rather than using the versions that they have preinstalled

[jakepeyser]

Addressed in fd7018b