RFC: DevMode Improvements

[winder]

Summary

Adds a new dev-mode only consensus option to enable dev-mode specific transaction fields. Implement two features with these fields:

• overriding the block header timestamp
• skipping transaction validation

Note: This PR includes changes to simplify private network management

• Goal: goal network create default templates #4891
• Goal: add --start option for network create command #4902

Examples

goal network create --rootdir mynetwork --devMode --start

# setup bash environment
export ALGORAND_DATA=./devmode_test/Node
TOKEN=$(cat $ALGORAND_DATA/algod.token)
ADDR=$(cat $ALGORAND_DATA/algod.net)
ACCOUNT_1=$(goal account list | head -n 1 | cut -f 2)
ACCOUNT_2=$(goal account list | tail -n 1 | cut -f 2)

# send a transaction to set the block time
goal clerk send --amount 100000000 --from $ACCOUNT_1 --to $ACCOUNT_1 --set-block-time 99999999

# look at block 1, it should have the specified
curl -sq -H "Authorization: Bearer $TOKEN" "$ADDR/v2/blocks/1"

# look closer
curl -sq -H "Authorization: Bearer $TOKEN" "$ADDR/v2/blocks/1" | grep 99999999

# you can also skip validation. This transaction should fail:
goal clerk send --amount 100000000 --from $ACCOUNT_1 --to $ACCOUNT_1 --signer $ACCOUNT_2

# now it succeeds
goal clerk send --amount 100000000 --from $ACCOUNT_1 --to $ACCOUNT_1 --signer $ACCOUNT_2 --skip-validation

# inspect the transaction to see how it works
goal clerk send --amount 100000000 --from $ACCOUNT_1 --to $ACCOUNT_1 --set-block-time 99999999 -o blocktime.txn
msgpacktool -d < blocktime.txn

Test Plan

TODO. So far only manual testing has been done.

[winder]

Ignore this file, these are private network changes from another PR.

[winder]

Ignore this file, these are private network changes from another PR.

[winder]

Ignore this file, these are private network changes from another PR.

[winder]

For the hackathon, this is how I set the new variable. Some new policy would be required for setting up a network that sets DevMode to true.

[winder]

Ignore this file, these are private network changes from another PR.