Config: add private OS parameters to the configuration

This updates objects, constructors and mocks for Instance and Cluster
objects in Python and Haskell.
cli: add parameters for private and secret OS parameters
opcodes: Modify InstanceSetParams
opcodes: modify ClusterSetParams
opcodes: modify InstanceCreate
opcodes: modify InstanceReinstall
luxid: give stern warnings about debug mode

Luxid as it is can leak private and secret parameters by logging
all requests as they arrive, before any preprocessing is done.

Warn the user stern warnings about this.
REMOVEME! Private debug stuff.
TODO: fixup