There are two cases where we can fail with node building:
1. The node errors or times out
2. Sending to the API server fails
In these cases a new timer is triggered and will test these nodes and add or
delete them as required. It stores them in a separate file.
This also adds a dummy API driver that always says 5 nodes are needed and
echos the node data sent to it to the log file.
Fixes bug #1080863
Change-Id: I9a67de2be5336abdfcad5a3bb372c467cb57f4b1
c9709df427