Adding in support for tropo:

• add tropo as layer to the interface here (note there is a hydro, wet and perhaps we could say total):

  ARIA-tools/tools/ARIAtools/extractProduct.py

  Line 54 in 438e3e6

  parser.add_argument('-l', '--layers', dest='layers', default=None,

• add in tropo group under 1c version here:

  ARIA-tools/tools/ARIAtools/ARIAProduct.py

  Line 419 in 438e3e6

  '/derived/ionosphere/ionosphere')

• add tropo in the sds keys here:

  ARIA-tools/tools/ARIAtools/ARIAProduct.py

  Line 263 in 438e3e6

  sdskeys=['productBoundingBox', 'unwrappedPhase', 'coherence',

• Add tropo to the group the condination to extract 2D from 3D here:

  ARIA-tools/tools/ARIAtools/extractProduct.py

  Line 614 in 438e3e6

  if any(":/science/grids/imagingGeometry" in s for s in [i[1]][0]):