This contract validates if the operations are allowed depending on the PriceOracle health.
PriceOracleis considered healthy once its completely up and the grace period has passed.
function setSequencerOracle(address newSequencerOracle)
Can be called only by PoolAdmin.
function setGracePeriod(uint256 newGracePeriod)
Can be called only by PoolAdmin or RiskAdmin.