[#357] Add check of request and resource tags

Signed-off-by: Marina Biryukova <m.biryukova@yadro.com>

api/handler/response.go

@@ -185,12 +185,6 @@ type VersioningConfiguration struct {
 	MfaDelete string   `xml:"MfaDelete,omitempty"`
 }
 
-// Tagging contains tag set.
-type Tagging struct {
-	XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ Tagging"`
-	TagSet  []Tag    `xml:"TagSet>Tag"`
-}
-
 // PostResponse contains result of posting object.
 type PostResponse struct {
 	Bucket string `xml:"Bucket"`
@@ -198,12 +192,6 @@ type PostResponse struct {
 	ETag   string `xml:"Etag"`
 }
 
-// Tag is an AWS key-value tag.
-type Tag struct {
-	Key   string
-	Value string
-}
-
 // MarshalXML -- StringMap marshals into XML.
 func (s StringMap) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
 	tokens := []xml.Token{start}