Configure minimum price for Kusama and Polkadot coretime (#754)

1 KSM on Kusama
10 DOT on Polkadot

---------

Co-authored-by: Robert <robert@gonimo.com>

Author: eskimor

CHANGELOG.md

@@ -16,6 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - [[#711](https://github.com/polkadot-fellows/runtimes/pull/711)] Pallet-broker: add extrinsic to remove a lease ([SDK stable2503 #7026](https://github.com/paritytech/polkadot-sdk/pull/7026)).
   - [[#711](https://github.com/polkadot-fellows/runtimes/pull/711)] Pallet-broker: add extrinsic to remove an assignment ([SDK stable2503 #7080](https://github.com/paritytech/polkadot-sdk/pull/7080)).
   - [[#711](https://github.com/polkadot-fellows/runtimes/pull/711)] Pallet-broker: add extrinsic to reserve a system core without having to wait two sale boundaries ([SDK stable2503 #4273](https://github.com/paritytech/polkadot-sdk/pull/4273)).
+  - [[#754](https://github.com/polkadot-fellows/runtimes/pull/754) Change to minimum price controller and configure minimum price of 10 DOT and 1 KSM for Coretime sales. Existing renewals will also be adjusted accordingly and are now no longer completely decoupled from the market. For details on this, please checkout [RFC-149](https://polkadot-fellows.github.io/RFCs/new/0149-rfc-1-renewal-adjustment.html).
 
 ### Changed
 

system-parachains/coretime/coretime-kusama/src/coretime.rs

@@ -322,6 +322,8 @@ impl CoretimeInterface for CoretimeAllocator {
 parameter_types! {
 	pub const BrokerPalletId: PalletId = PalletId(*b"py/broke");
 	pub const MinimumCreditPurchase: Balance = UNITS / 10;
+
+	pub const MinimumEndPrice: Balance = UNITS;
 }
 
 pub struct SovereignAccountOf;
@@ -347,6 +349,6 @@ impl pallet_broker::Config for Runtime {
 	type AdminOrigin = EnsureRoot<AccountId>;
 	type SovereignAccountOf = SovereignAccountOf;
 	type MaxAutoRenewals = ConstU32<100>;
-	type PriceAdapter = pallet_broker::CenterTargetPrice<Balance>;
+	type PriceAdapter = pallet_broker::MinimumPrice<Balance, MinimumEndPrice>;
 	type MinimumCreditPurchase = MinimumCreditPurchase;
 }

system-parachains/coretime/coretime-polkadot/src/coretime.rs

@@ -319,6 +319,7 @@ impl CoretimeInterface for CoretimeAllocator {
 parameter_types! {
 	pub const BrokerPalletId: PalletId = PalletId(*b"py/broke");
 	pub const MinimumCreditPurchase: Balance = UNITS / 10;
+	pub const MinimumEndPrice: Balance = 10 * UNITS;
 }
 
 pub struct SovereignAccountOf;
@@ -344,6 +345,6 @@ impl pallet_broker::Config for Runtime {
 	type AdminOrigin = EnsureRoot<AccountId>;
 	type SovereignAccountOf = SovereignAccountOf;
 	type MaxAutoRenewals = ConstU32<100>;
-	type PriceAdapter = pallet_broker::CenterTargetPrice<Balance>;
+	type PriceAdapter = pallet_broker::MinimumPrice<Balance, MinimumEndPrice>;
 	type MinimumCreditPurchase = MinimumCreditPurchase;
 }