1.15.0 UAT -- allow bbox that crosses the IDL

[skorper]

Issue found in 1.15.0 UAT: some bboxes are seeing validation errors:

• -180,-60,-120,60
  • "ERROR - Error parsing "--bounds": S Latitude must be <= N Latitude"
• 120,-60,-120,60
  • "ERROR - Error parsing "--bounds": W Longitude must be <= E Longitude"
• -170,-20,-30,20
  • "Error parsing "--bounds": S Latitude must be <= N Latitude"

Some of these cross the IDL, which we do support so should not error out. Some of these do not cross the IDL so there is a bug in the validation code. We should probably limit the validation we're doing here -- so long as CMR/Harmony accept the bbox we should not complain. Maybe a check that -180<=Longitude<=10 and -90<Latitude<90 is sufficient for bbox validation.