Update contracts to use eosio.msig instead of deferred transactions

[michaeljyeates]

Once the new eosio.msig contract is deployed we need to update any contracts which currently send deferred transactions directly need to be updated to use eosio.msig.

The contract needs to do the following

• new inline msig contract deployed onto jungle
• Build the transaction normally
• Submit that as in inline action to eosio.msig::propose
• Submit an inline action to eosio.msig::approve for that transaction
• Offchain, after the required delay has passed, submit eosio.msig::exec on the transaction

@see https://github.com/EOSIO/eosio.contracts/tree/v1.8.3-inline-msig

[dallasjohnson]

@michaeljyeates Would you like me to take a look at this for the in-contract changes? I assume you you will be thinking about the off-chain monitoring of these transactions to be able to trigger exec via a cron job of something.

[str]

the new inline msig contract was just deployed onto jungle so i think we can start to test that now