Bugs in reco.simple_param service

[thehrh]

For documentation before making a PR...

Generic service test revealed a few bugs:

• pisa/pisa/stages/reco/simple_param.py

  Line 70 in 70f7153

  return matches.keys()[0], matches.values()[0]

  : odict keys/values are not subscriptable (list(matches.keys()/values())[0])

• pisa/pisa/stages/reco/simple_param.py

  Line 456 in 70f7153

  if "reco_energy" not in container :

  ,

  pisa/pisa/stages/reco/simple_param.py

  Line 480 in 70f7153

  if "reco_coszen" not in container :

  ,

  pisa/pisa/stages/reco/simple_param.py

  Line 505 in 70f7153

  if "pid" not in container :

  : now all have to read in container: -> in container.keys