Added clean exec functionality + ACI implementation - V2 (#244)

* Stubs and vkubelet changes

* added dependencies

* Azure provider exec implementation

* added missing dependencies

* added vkubelet imports

* added huawei exec stub

* Fixed exec tab functionality / stdin buffer length

* Removed unused import

* Added provider function GetPodFullName + ACI implementation

* Added error handling in ACI provider exec

providers/web/broker.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"log"
 	"net/http"
 	"net/url"
 	"os"
@@ -28,6 +29,8 @@ import (
 
 	"github.com/cenkalti/backoff"
 	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/tools/remotecommand"
 )
 
 // BrokerProvider implements the virtual-kubelet provider interface by forwarding kubelet calls to a web endpoint.
@@ -122,6 +125,20 @@ func (p *BrokerProvider) GetContainerLogs(namespace, podName, containerName stri
 	return string(response), nil
 }
 
+// Get full pod name as defined in the provider context
+// TODO: Implementation
+func (p *BrokerProvider) GetPodFullName(namespace string, pod string) string {
+	return ""
+}
+
+// ExecInContainer executes a command in a container in the pod, copying data
+// between in/out/err and the container's stdin/stdout/stderr.
+// TODO: Implementation
+func (p *BrokerProvider) ExecInContainer(name string, uid types.UID, container string, cmd []string, in io.Reader, out, err io.WriteCloser, tty bool, resize <-chan remotecommand.TerminalSize, timeout time.Duration) error {
+	log.Printf("receive ExecInContainer %q\n", container)
+	return nil
+}
+
 // GetPodStatus retrieves the status of a given pod by name.
 func (p *BrokerProvider) GetPodStatus(namespace, name string) (*v1.PodStatus, error) {
 	urlPathStr := fmt.Sprintf(