peek for Fermin

### This is not a PR
Just used to interchange info.
Will be removed after fulfilling its purpose
processContextElement is called from two places:
- In mongoUpdateContext, there is a check about "if (servicePathV.size() > 1)".
- In mongoNotifyContext, an empty ServicePathV is sent to processContextElement (and a P10 FIXME about it).

This (mongoNotifyContext) needs to change and I guess it is simply to add the ServicePathV from the notification (serviceRoutines/postNotifyContext.cpp).
That is also where the ServicePath vector should be check about having one single service-path