Nomination Pools migration v5: RewardPool fix (#6957)

* pools migration v5

* Allow deprecated

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Keep old migrations around

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* update lockfile for {"substrate"}

* use master Cargo.lock

* revert Cargo.lock master

* clippy: remove unused parentheses

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Fix parachain config migration

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

* Make tests work

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>

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Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: parity-processbot <>