CLIMATE-875 Upgrade to Podaacpy 1.4.0

[lewismc]

Commit to address https://issues.apache.org/jira/browse/CLIMATE-875

[OCWJenkins]

Merged build triggered. Test Failed.

[lewismc]

OK folks, so this PR passes against Python 2.7... which is great. Thank you @agoodm for stabilizing and significantly simplifying our builds and packaging.
There are a number of issue here with Python 3.4 and 3.5 which we will address over on additional tickets. Note, that the podaac_datasource tests actually pass fine on subsequent versions of Python.
If anyone could review this clean PR it would be greatly appreciated.
Ta

[agoodm]

I ran the example, LGTM.

Regarding the python 3 build issues most of the those errors are pretty trivial to fix, so I'll see if I can get around to doing that by the end of the week. The only thing that might be difficult is rcmed since it uses urllib. We might have to learn by example from podaacpy and add future as a dependency here.