s3: Add GLACIER_IR storage class

backend/s3/s3.go

@@ -1184,6 +1184,9 @@ If you leave it blank, this is calculated automatically from the sse_customer_ke
 			}, {
 				Value: "INTELLIGENT_TIERING",
 				Help:  "Intelligent-Tiering storage class",
+			}, {
+				Value: "GLACIER_IR",
+				Help:  "Glacier Instant Retrieval storage class",
 			}},
 		}, {
 			// Mapping from here: https://www.alibabacloud.com/help/doc-detail/64919.htm

docs/content/s3.md

@@ -230,6 +230,8 @@ Choose a number from below, or type in your own value
    \ "DEEP_ARCHIVE"
  8 / Intelligent-Tiering storage class
    \ "INTELLIGENT_TIERING"
+ 9 / Glacier Instant Retrieval storage class
+   \ "GLACIER_IR"
 storage_class> 1
 Remote config
 --------------------
@@ -1327,6 +1329,8 @@ The storage class to use when storing new objects in S3.
         - Glacier Deep Archive storage class
     - "INTELLIGENT_TIERING"
         - Intelligent-Tiering storage class
+    - "GLACIER_IR"
+        - Glacier Instant Retrieval storage class
 
 #### --s3-storage-class