Use cmp.Diff instead of manually comparing keys

It feels ironic that I need to tell cmp.Diff how to marshal these in
order to compare them but oh well XD

test/eventlistener_test.go

@@ -373,11 +373,11 @@ func TestEventListenerCreate(t *testing.T) {
 // The structure of this field corresponds to values for the `license` key in
 // testdata/pr.json, and can be used to unmarshal the dat.
 type license struct {
-	key     string
-	name    string
-	spdx_id string
-	url     string
-	node_id string
+	Key     string `json:"key"`
+	Name    string `json:"name"`
+	SpdxID string `json:"spdx_id"`
+	URL     string `json:"url"`
+	NodeID string `json:"node_id"`
 }
 
 // compareParamsWithLicenseJSON will compare the passed in ResourceParams by further checking
@@ -398,11 +398,11 @@ func compareParamsWithLicenseJSON(x, y v1alpha1.ResourceParam) bool {
 			if err := json.Unmarshal([]byte(y.Value), &yData); err != nil {
 				return false
 			}
-			if xData.key != yData.key || xData.name != yData.name || xData.spdx_id != yData.spdx_id || xData.url != yData.url || xData.node_id != yData.node_id {
+			if diff := cmp.Diff(xData, yData); diff != "" {
 				return false
 			}
 		}
 		return true
 	}
 	return false
-}
+}