Update azure-aci to use nodeutil instead of node-cli

Signed-off-by: Heba Elayoty <hebaelayoty@gmail.com>

cmd/virtual-kubelet/context.go

@@ -0,0 +1,31 @@
+/*
+Copyright (c) Microsoft Corporation.
+Licensed under the Apache 2.0 license.
+*/
+package main
+
+import (
+	"context"
+	"os"
+	"os/signal"
+)
+
+func BaseContext(ctx context.Context) (context.Context, func()) {
+	sigC := make(chan os.Signal, 1)
+	ctx, cancel := context.WithCancel(ctx)
+
+	go func() {
+		for {
+			select {
+			case <-ctx.Done():
+				signal.Stop(sigC)
+				return
+			case <-sigC:
+				cancel()
+			}
+		}
+	}()
+
+	signal.Notify(sigC, cancelSigs()...)
+	return ctx, cancel
+}