Add hash algos as flags on the folder in cluster config

specs/bep-v1.rst

@@ -337,7 +337,7 @@ folder Flags field contains the following single bit flags:
      0                   1                   2                   3
      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
-    |                       Reserved                          |D|P|R|
+    |                       Reserved                  | Hash  |D|P|R|
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 
 :Bit 31 ("R", Read Only):
@@ -351,6 +351,14 @@ folder Flags field contains the following single bit flags:
 :Bit 29 ("D", Ignore Deletes):
     is set for folders that the device will ignore deletes for.
 
+:Bits 25-28 (Hash):
+    indicates the hash algorithm in use for this folder, as a four bit integer.
+    The value values are:
+
+    - 0: SHA256
+    - 1: Murmur3-128
+    - 2-15: Reserved for future usage
+
 The **Options** field contains a list of options that apply to the folder.
 
 Fields (Device Structure)