s3: add support for setting storage class in config and command line

docs/content/s3.md

@@ -147,6 +147,17 @@ Choose a number from below, or type in your own value
  2 / AES256
    \ "AES256"
 server_side_encryption>
+The storage class to use when storing objects in S3.
+Choose a number from below, or type in your own value
+ 1 / Default
+   \ ""
+ 2 / Standard storage class
+   \ "STANDARD"
+ 3 / Reduced redundancy storage class
+   \ "REDUCED_REDUNDANCY"
+ 4 / Standard Infrequent Access storage class
+   \ "STANDARD_IA"
+storage_class>
 Remote config
 --------------------
 [remote]
@@ -217,6 +228,21 @@ credentials. In order of precedence:
 If none of these option actually end up providing `rclone` with AWS
 credentials then S3 interaction will be non-authenticated (see below).
 
+### Specific options ###
+
+Here are the command line options specific to this cloud storage
+system.
+
+#### ----s3-storage-class ####
+
+Storage class to upload new objects with.
+
+Available options include:
+
+ - STANDARD - default storage class
+ - STANDARD_IA - for less frequently accessed data (e.g backups)
+ - REDUCED_REDUNDANCY (only for noncritical, reproducible data, has lower redundancy)
+
 ### Anonymous access to public buckets ###
 
 If you want to use rclone to access a public bucket, configure with a