Move bypassMinFeeMsgTypes and MaxTotalBypassMinFeeMsgGasUsage to params

[yaruwangway]

Problem

Presently, in cosmoshub, each transaction has to pay fees except bypass-min-fee-msg-types within a certain gas limit (MaxBypassMinFeeMsgGasUsage).

Each node can setup its own bypass-min-fee-msg-types. MaxTotalBypassMinFeeMsgGasUsage is a variable in hardcoded. As a result, it is not clear which msg can be bypassed and if the msgs can bypass min fee is uncertain.

The bypass-min-fee-msg-types and MaxTotalBypassMinFeeMsgGasUsage will move to params so that they can be changed by gov proposal, and the whole network accept the same bypass msgs and bypass gas limit. The bypass-min-fee-msg-types and MaxTotalBypassMinFeeMsgGasUsage can be also queried, so that for transaction submitter, it is clear what msgs can be bypassed.

Moving bypass-min-fee-msg-types and MaxTotalBypassMinFeeMsgGasUsage to params is also allows fee check in deliverTX. Details please check here.

Please note, the above mentioned refactor is State breaking !!!

Proposal

This refactor will include:

1. add bypassMinFeeMsgTypes and MaxTotalBypassMinFeeMsgGasUsage to global fee params. For example, when query global fee, can get the following params:

{
  "minimum_gas_prices": [
    {
      "denom": "uatom",
      "amount": "1.000000000000000000"
    },
  ],
  "bypass_min_fee_msg_types": [
    "/ibc.core.channel.v1.MsgRecvPacket",
    "/ibc.core.channel.v1.MsgAcknowledgement",
    "/ibc.core.client.v1.MsgUpdateClient",
    "/ibc.core.channel.v1.MsgTimeout",
    "/ibc.core.channel.v1.MsgTimeoutOnClose"
  ],
  "max_total_bypass_minFee_msg_gas_usage": "1000000"
}

2. add validationFn for bypassMinFeeMsgTypes and MaxTotalBypassMinFeeMsgGasUsage.
3. add migration, when migrating from v9 -> v10,
   bypass_min_fee_msg_types=[ "/ibc.core.channel.v1.MsgRecvPacket", "/ibc.core.channel.v1.MsgAcknowledgement", "/ibc.core.client.v1.MsgUpdateClient", "/ibc.core.channel.v1.MsgTimeout", "/ibc.core.channel.v1.MsgTimeoutOnClose"] and max_total_bypass_minFee_msg_gas_usage=1000000 will be set as default.
4. removebypass-min-fee-msg-types from config. please check this issue