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.

vkubelet/vkubelet.go

@@ -13,6 +13,7 @@ import (
 	"github.com/virtual-kubelet/virtual-kubelet/manager"
 	"github.com/virtual-kubelet/virtual-kubelet/providers/aws"
 	"github.com/virtual-kubelet/virtual-kubelet/providers/azure"
+	"github.com/virtual-kubelet/virtual-kubelet/providers/azurebatch"
 	"github.com/virtual-kubelet/virtual-kubelet/providers/cri"
 	"github.com/virtual-kubelet/virtual-kubelet/providers/hypersh"
 	"github.com/virtual-kubelet/virtual-kubelet/providers/mock"
@@ -90,6 +91,11 @@ func New(nodeName, operatingSystem, namespace, kubeConfig, taint, provider, prov
 		if err != nil {
 			return nil, err
 		}
+	case "azurebatch":
+		p, err = azurebatch.NewBatchProvider(providerConfig, rm, nodeName, operatingSystem, internalIP, daemonEndpointPort)
+		if err != nil {
+			return nil, err
+		}
 	case "hyper":
 		p, err = hypersh.NewHyperProvider(providerConfig, rm, nodeName, operatingSystem)
 		if err != nil {