Implement Azure Blob external image uploader

pkg/components/imguploader/azureblobuploader_test.go

@@ -0,0 +1,24 @@
+package imguploader
+
+import (
+	"context"
+	"testing"
+
+	"github.com/grafana/grafana/pkg/setting"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestUploadToAzureBlob(t *testing.T) {
+	SkipConvey("[Integration test] for external_image_store.azure_blob", t, func() {
+		err := setting.NewConfigContext(&setting.CommandLineArgs{
+			HomePath: "../../../",
+		})
+
+		uploader, _ := NewImageUploader()
+
+		path, err := uploader.Upload(context.Background(), "../../../public/img/logo_transparent_400x.png")
+
+		So(err, ShouldBeNil)
+		So(path, ShouldNotEqual, "")
+	})
+}