[1.2] Rebrand Updates Bios Boot Tutorial

[ericpassmore]

Two changes

• update name of system-contracts github repro
• Update help text for bios-boot-tutorial.py change from EOSIO to Vaulta

Resolved #1376

Related PR main merge #1550

[ericpassmore]

Additional Steps for A token.

# Create the account `core.vaulta` first
cleos create account eosio core.vaulta SOME_KEY_HERE -p eosio@active

# Add code permissions to the vaulta contract
cleos set account permission core.vaulta active --add-code -p alice@active

# Set privileged
cleos push action eosio setpriv '["core.vaulta", 1]' -p eosio@active

# Set contract/abi
cleos set contract core.vaulta ./vaulta vaulta.wasm vaulta.abi -p core.vaulta@active

# Buy some RAM for the swap contract (might need to change the paying account (eosio))
# You can skip this step if the RAM market isn't set up / the chain doesn't require resources
cleos push action eosio buyram '["eosio", "core.vaulta", "100.0000 EOS"]' -p eosio@active

# Initialize
cleos push action core.vaulta init '["2100000000.0000 A"]' -p core.vaulta@active

[ericpassmore]

Stuck, bios-boot uses SYS but the vault contracts require EOS.
https://github.com/VaultaFoundation/vaulta-system-contract/blob/c641069bf72dcc56e72e96cd1ce7ff25f27d7e04/contracts/system.entry.cpp#L153

[ericpassmore]

Stuck, bios-boot uses SYS but the vault contracts require EOS. https://github.com/VaultaFoundation/vaulta-system-contract/blob/c641069bf72dcc56e72e96cd1ce7ff25f27d7e04/contracts/system.entry.cpp#L153

Solved, --symbol argument to bios-boot-tutorial.py will change the symbol