Fix bad rent in Bank::deposit as if since epoch 0 (#10468)

* Fix bad rent in Bank::deposit as if since epoch 0

* Remove redundant predicate

* Rename

* Start to add tests with some cleanup

* Forgot to add refactor code...

* Enchance test

* Really fix rent timing in deposit with robust test

* Simplify new behavior by disabling rent altogether

sdk/src/genesis_config.rs

@@ -14,6 +14,7 @@ use crate::{
     shred_version::compute_shred_version,
     signature::{Keypair, Signer},
     system_program,
+    timing::years_as_slots,
 };
 use bincode::{deserialize, serialize};
 use chrono::{TimeZone, Utc};
@@ -183,6 +184,26 @@ impl GenesisConfig {
     pub fn add_rewards_pool(&mut self, pubkey: Pubkey, account: Account) {
         self.rewards_pools.insert(pubkey, account);
     }
+
+    pub fn hashes_per_tick(&self) -> Option<u64> {
+        self.poh_config.hashes_per_tick
+    }
+
+    pub fn ticks_per_slot(&self) -> u64 {
+        self.ticks_per_slot
+    }
+
+    pub fn ns_per_slot(&self) -> u128 {
+        self.poh_config.target_tick_duration.as_nanos() * self.ticks_per_slot() as u128
+    }
+
+    pub fn slots_per_year(&self) -> f64 {
+        years_as_slots(
+            1.0,
+            &self.poh_config.target_tick_duration,
+            self.ticks_per_slot(),
+        )
+    }
 }
 
 impl fmt::Display for GenesisConfig {