stake-pool: Fund rent-exemption from reserve in decrease_additional
#5288
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2501babe
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Problem
We should fund the rent-exempt reserve for the transient stake account from the stake pool reserve during decrease.
Solution
To start with, require the reserve during
decrease_additional_validator_stake, and then withdraw the rent-exemption from the reserve during processing.The next step after this is to create a new instruction for a normal decrease without an ephemeral stake account. Or we could deprecate the old one and force people to always use this one.