test: add testcases for uuid

Author: jo-mueller

tests/attributes/spec/invalid/image/multiscales_bad_uuid.json

@@ -0,0 +1,73 @@
+{
+	"ome": {
+		"version": "0.6.dev3",
+		"multiscales": [
+			{
+				"name": "multiscales",
+				"uuid": 123,
+				"coordinateSystems": [
+					{
+						"name": "physical",
+						"axes": [
+							{
+								"type": "space",
+								"name": "z",
+								"unit": "micrometer",
+								"discrete": false
+							},
+							{
+								"type": "space",
+								"name": "y",
+								"unit": "micrometer",
+								"discrete": false
+							},
+							{
+								"type": "space",
+								"name": "x",
+								"unit": "micrometer",
+								"discrete": false
+							}
+						]
+					}
+				],
+				"datasets": [
+					{
+						"path": "array",
+						"coordinateTransformations": [
+							{
+								"type": "sequence",
+								"output": "physical",
+								"input": "array",
+								"transformations": [
+									{
+										"type": "scale",
+										"scale": [
+											4,
+											3,
+											2
+										]
+									},
+									{
+										"type": "translation",
+										"translation": [
+											30,
+											20,
+											10
+										]
+									}
+								],
+								"name": "transform-name"
+							}
+						]
+					}
+				]
+			}
+		]
+  },
+	"_conformance": {
+		"schema": {
+					"id": "schemas/image.schema"
+		},
+		"valid": false
+	}
+}

tests/attributes/spec/valid/image/multiscales_transform_sequence.json

@@ -4,6 +4,7 @@
 		"multiscales": [
 			{
 				"name": "multiscales",
+				"uuid": "urn:uuid:f81d4fae-7dec-11d0-a765-00a0c91e6bf6",
 				"coordinateSystems": [
 					{
 						"name": "physical",