Request.post() function of browser & nodejs runtime have different specs

[Endebert]

Currently, the Request.post() function of the browser runtime and nodejs runtime work differently, which should not be the case.

I.e. in order to provide the payload, the function of the browser runtime needs an options object with a body property being the payload, while for the nodejs runtime, the options object itself is the payload.

Please find a common spec and modify the functions accordingly.

Mentioning all people that worked on the the relevant code parts: @dvilchez @vitormsilva @jboulmal

[emmelmann-fokus]

Since the browser runtime is widely used right now, I would suggest to adjust the nodeJS runtime.

@dvilchez @vitormsilva @jboulmal @pchainho : Can we solve this issue within the next 1 or two days? In order to progress with the integrated hotel scenario demo, we need a stable nodeJS runtime which behaves as the browser runtime.