pin hdf5 and geos

[ocefpaf]

Porting #157 and #160 to the gdal2_PY36_linux branch.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[ocefpaf]

The message below from conda helps a little:

  - kealib 1.4.7 -> hdf5 1.8.17|1.8.17.*
  - python 3.6*

@qwhelan we will need to navigate down all the dependencies to find what is going on. I believe the issue lies with the packages that depended on libnetcdf. I am working on it...

[qwhelan]

@ocefpaf I think the dependency solver is having trouble as hdf5 is not being built for win and py36 (https://github.com/conda-forge/hdf5-feedstock/blob/master/recipe/meta.yaml#L29), but gdal is trying that combination.

[ocefpaf]

That message is not very helpful. I (think) found the problem and I already re-start Windows and Linux. Waiting on https://travis-ci.org/conda-forge/kealib-feedstock/builds/240415587 to re-start Travis-CI