internal/cloudapi: add ostree options for all otree image types

b01792d9dd broke this behaviour. All
ostree image types should have an ostree resolve job.

internal/cloudapi/v2/v2_test.go

@@ -713,7 +713,7 @@ func TestComposeDependencyError(t *testing.T) {
 		"distribution": "%s",
 		"image_request":{
 			"architecture": "%s",
-			"image_type": "aws",
+			"image_type": "edge-commit",
                         "ostree": {
                                 "url": "somerepo.org",
                                 "ref": "test"