Create a provider to use Azure Batch (#133)

* Started work on provider

* WIP Adding batch provider

* Working basic call into pool client. Need to parameterize the baseurl

* Fixed job creation by manipulating the content-type

* WIP Kicking off containers. Dirty

* [wip] More meat around scheduling simple containers.

* Working on basic task wrapper to co-schedule pods

* WIP on task wrapper

* WIP

* Working pod minimal wrapper for batch

* Integrate pod template code into provider

* Cleaning up

* Move to docker without gpu

* WIP batch integration

* partially working

* Working logs

* Tidy code

* WIP: Testing and readme

* Added readme and terraform deployment for GPU Azure Batch pool.

* Update to enable low priority nodes for gpu

* Fix log formatting bug. Return node logs when container not yet started

* Moved to golang v1.10

* Fix cri test

* Fix up minor docs Issue. Add provider to readme. Add var for vk image.

providers/azurebatch/testdata/logresponse.json

@@ -0,0 +1,6 @@
+{"log":"[Vector addition of 50000 elements]\n","stream":"stdout","time":"2018-05-30T17:02:49.967357287Z"}
+{"log":"Copy input data from the host memory to the CUDA device\n","stream":"stdout","time":"2018-05-30T17:02:49.967417086Z"}
+{"log":"CUDA kernel launch with 196 blocks of 256 threads\n","stream":"stdout","time":"2018-05-30T17:02:49.967423286Z"}
+{"log":"Copy output data from the CUDA device to the host memory\n","stream":"stdout","time":"2018-05-30T17:02:49.967427386Z"}
+{"log":"Test PASSED\n","stream":"stdout","time":"2018-05-30T17:02:49.967431286Z"}
+{"log":"Done\n","stream":"stdout","time":"2018-05-30T17:02:49.967435286Z"}