Fix fee mismatch on snapshot deserialize (#12697)

Co-authored-by: Carl Lin <carl@solana.com>

sdk/src/hard_forks.rs

@@ -4,7 +4,7 @@
 use byteorder::{ByteOrder, LittleEndian};
 use solana_sdk::clock::Slot;
 
-#[derive(Default, Clone, Deserialize, Serialize, AbiExample)]
+#[derive(Default, Clone, Debug, Deserialize, Serialize, AbiExample, PartialEq, Eq)]
 pub struct HardForks {
     hard_forks: Vec<(Slot, usize)>,
 }