Add a copy of Rapi.HS as IAlloc.hs

[ganeti-local] / haddock-prologue

This is the internal documentation for htools, a couple of small tools
for Ganeti cluster analysis.

The "Ganeti.HTools.Cluster" module is the one holding most high-level
logic, the "Ganeti.HTools.Node" and "Ganeti.HTools.Instance" modules
hold the model for nodes and instances respectively, while the
"Ganeti.HTools.Rapi" contains the RAPI collector.