feat(connector-besu): replace filesystem for keychain

[jordigiam]

Is your feature request related to a problem? Please describe.
In connector Besu and connector Quorum, the invokeContractV2 use the filesystem to read the JSON of the smartcontracts.

Describe the solution you'd like
Replace de filesystem for keychain or consortium database.

Acceptance criteria
I should be able to read the JSON and rewrite it if necessary with the new networkId and the contract address.