fix(patch): use ordered keys when marshalling json (#29)

Author: eachirei

patch/annotation.go

@@ -115,7 +115,7 @@ func (a *Annotator) GetModifiedConfiguration(obj runtime.Object, annotate bool)
 		a.metadataAccessor.SetAnnotations(obj, nil)
 	}
 
-	modified, err = json.Marshal(obj)
+	modified, err = json.ConfigCompatibleWithStandardLibrary.Marshal(obj)
 	if err != nil {
 		return nil, err
 	}
@@ -126,7 +126,7 @@ func (a *Annotator) GetModifiedConfiguration(obj runtime.Object, annotate bool)
 			return nil, err
 		}
 
-		modified, err = json.Marshal(obj)
+		modified, err = json.ConfigCompatibleWithStandardLibrary.Marshal(obj)
 		if err != nil {
 			return nil, err
 		}

patch/deletenull.go

@@ -101,7 +101,7 @@ func DeleteNullInJson(jsonBytes []byte) ([]byte, map[string]interface{}, error)
 		return nil, nil, emperror.Wrap(err, "could not delete null values from patch map")
 	}
 
-	o, err := json.Marshal(filteredMap)
+	o, err := json.ConfigCompatibleWithStandardLibrary.Marshal(filteredMap)
 	if err != nil {
 		return nil, nil, emperror.Wrap(err, "could not marshal filtered patch map")
 	}
@@ -183,7 +183,7 @@ func deleteStatusField(obj []byte) ([]byte, error) {
 		return []byte{}, emperror.Wrap(err, "could not unmarshal byte sequence")
 	}
 	delete(objectMap, "status")
-	obj, err = json.Marshal(objectMap)
+	obj, err = json.ConfigCompatibleWithStandardLibrary.Marshal(objectMap)
 	if err != nil {
 		return []byte{}, emperror.Wrap(err, "could not marshal byte sequence")
 	}
@@ -206,7 +206,7 @@ func deleteVolumeClaimTemplateFields(obj []byte) ([]byte, error) {
 		}
 	}
 
-	obj, err = json.Marshal(sts)
+	obj, err = json.ConfigCompatibleWithStandardLibrary.Marshal(sts)
 	if err != nil {
 		return []byte{}, emperror.Wrap(err, "could not marshal byte sequence")
 	}

patch/patch.go

@@ -39,12 +39,12 @@ func NewPatchMaker(annotator *Annotator) *PatchMaker {
 }
 
 func (p *PatchMaker) Calculate(currentObject, modifiedObject runtime.Object, opts ...CalculateOption) (*PatchResult, error) {
-	current, err := json.Marshal(currentObject)
+	current, err := json.ConfigCompatibleWithStandardLibrary.Marshal(currentObject)
 	if err != nil {
 		return nil, emperror.Wrap(err, "Failed to convert current object to byte sequence")
 	}
 
-	modified, err := json.Marshal(modifiedObject)
+	modified, err := json.ConfigCompatibleWithStandardLibrary.Marshal(modifiedObject)
 	if err != nil {
 		return nil, emperror.Wrap(err, "Failed to convert current object to byte sequence")
 	}