enable migrations in polkadot and kusama runtimes (#824)

* enable migrations in polkadot and kusama runtimes

* bump runtime version

polkadot/runtime/kusama/Cargo.toml

@@ -51,7 +51,7 @@ recovery = { package = "pallet-recovery", git = "https://github.com/paritytech/s
 session = { package = "pallet-session", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
 society = { package = "pallet-society", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
 frame-support = { git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
-staking = { package = "pallet-staking", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
+staking = { package = "pallet-staking", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false, features = ["migrate"] }
 pallet-staking-reward-curve = { git = "https://github.com/paritytech/substrate", branch = "polkadot-master" }
 system = { package = "frame-system", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
 system_rpc_runtime_api = { package = "frame-system-rpc-runtime-api", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }

polkadot/runtime/polkadot/Cargo.toml

@@ -48,7 +48,7 @@ offences = { package = "pallet-offences", git = "https://github.com/paritytech/s
 randomness-collective-flip = { package = "pallet-randomness-collective-flip", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
 session = { package = "pallet-session", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
 frame-support = { git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
-staking = { package = "pallet-staking", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
+staking = { package = "pallet-staking", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false, features = ["migrate"] }
 pallet-staking-reward-curve = { git = "https://github.com/paritytech/substrate", branch = "polkadot-master" }
 system = { package = "frame-system", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }
 system_rpc_runtime_api = { package = "frame-system-rpc-runtime-api", git = "https://github.com/paritytech/substrate", branch = "polkadot-master", default-features = false }