Handling invalid value for main chain max gas price

This release contains a fix to handle invalid value for mainChainMaxGasPrice by using the value DefaultMainchainMaxGasPrice. When mainChainMaxGasPrice has been configured incorrectly or left blank, the value of DefaultMainchainMaxGasPrice is considered which ensures that the checkpoint tx is sent to mainchain by the current proposer without any issues (even in case of a misconfiguration).

New Method to Update Checkpoint Data

Added a method in the Checkpoint module that looks up the rootchain (ethereum for mainnnet and goerli for mumbai) and updates the existing checkpoint. This can be used (by firing a CLI command) in cases where the checkpoint details persisted in the state are incorrect. This method also follows the usual tendermint consensus before updating the state.

One such incident (with incorrect end-block in a checkpoint) had occurred in the mumbai network due to which we had to roll out this fix and update the checkpoint details on 2021-10-06.

Max Gas Price for Checkpoints, Child Chain Confirmations Check in Validators, Merging Mumbai and Mainnet Branches

This is a maintenance release with the following changes:

• Configurable Max Gas Price for Checkpoints - To mitigate instances where high fee is paid for submitting checkpoint txs on ethereum
• Child Chain min Block Confirmations in Side Channel - Implemented the checks in nodes other than the proposer
• Merging Mumbai and Mainnet Branches by incorporating a new config file for chain specific parameters
• Setu/Bridge - Handling non-contiguous nonce

Checkpoint optimization for Mainnet

v0.2.1-mainnet

Merge pull request #538 from maticnetwork/jdkanani/change-checkpoint-…

Checkpoint optimization for Mumbai

v0.2.1-mumbai

Merge pull request #552 from maticnetwork/jdkanani/use-submit-checkpo…

Devnet 70004 v2

Merge pull request #393 from maticnetwork/revert-infinite-retry

revert infinite retry

Counter stake 2002

Merge pull request #201 from mankenavenkatesh/master

fix bor chain id in span  msg

Beta Mainet 1.1

Merge pull request #92 from maticnetwork/genesis-checker

Added genesis checker