Add additional device naming formats to formatPartition template func (#771)

## Description


This allows for using the formatPartition func for more device types. `vd*` is a device created by virtio. `hd*` for legacy IDE hard disks.

Also use `hello-world` image instead of `alpine` in the `TestDockerImageNotPresent` unit test.

## Why is this needed



Fixes: #770 

## How Has This Been Tested?





## How are existing users impacted? What migration steps/scripts do we need?





## Checklist:

I have:

- [ ] updated the documentation and/or roadmap (if required)
- [ ] added unit or e2e tests
- [ ] provided instructions on how to upgrade

Author: mergify[bot]

internal/agent/runtime/docker_test.go

@@ -27,7 +27,7 @@ func TestDockerImageNotPresent(t *testing.T) {
 		t.Fatalf("Received unexpected error: %v", err)
 	}
 
-	image := "alpine"
+	image := "hello-world"
 
 	images, err := clnt.ImageList(context.Background(), types.ImageListOptions{
 		Filters: filters.NewArgs(filters.Arg("reference", image)),

internal/workflow/template_funcs.go

@@ -20,11 +20,12 @@ var templateFuncs = map[string]interface{}{
 //
 //	formatPartition("/dev/nvme0n1", 0) -> /dev/nvme0n1p1
 //	formatPartition("/dev/sda", 1) -> /dev/sda1
+//	formatPartition("/dev/vda", 2) -> /dev/vda2
 func formatPartition(dev string, partition int) string {
 	switch {
 	case strings.HasPrefix(dev, "/dev/nvme"):
 		return fmt.Sprintf("%vp%v", dev, partition)
-	case strings.HasPrefix(dev, "/dev/sd"):
+	case strings.HasPrefix(dev, "/dev/sd"), strings.HasPrefix(dev, "/dev/vd"), strings.HasPrefix(dev, "/dev/hd"):
 		return fmt.Sprintf("%v%v", dev, partition)
 	}
 	return dev