[FEATURE] - cardano-testnet: Allow to pass custom node configuration file and custom genesis files

[CarlosLopezDeLara]

What

cardano-testnet to take genesis and configuration files with flags from the command line.

Why

Allow starting clusters with customized settings so that users can easily create local testing environments.

Acceptance Criteria

1. I can start a cluster with custom genesis and config with something like:

cardano-testnet cardano  \
--byron-genesis <FILE> \
--shelley-genesis  <FILE> \
--alonzo-geneis <FILE> \
--conway-genesis <FILE> \
--config <FILE> \
...

[edit] Finally we went for cardano-testnet cardano --node-config <FILE> and allow the given <FILE> to point to genesis files of eras. This way we don't need specific flags for each era's genesis file (this was suggested by @Jimbo4350).

Personas

• SPOs
• dApp Devs
• Exchanges
• Wallets
• 3rd party tools
• ADA holders

Definition of Done (DoD)

• Acceptance Criteria + User Stories & DoD created and singed-off (by PO, dev & test owners)
• Builds successfully on CI
• Code & Test review (as per Acceptance Criteria)
• There is documentation and/or examples for the new functionality (usage/response)
• Log/record changes on Vnext (or similar depending on what we adopt)
• Ticket number(s) included in PR description
• All Acceptance Criteria met and covered by dev/unit/property/integration tests
• System/E2E automated tests + System Test Engineer Owner Sign-off

NOTE: Ideally, we should merge only fully implemented and tested features into the master branch.
So all the above steps are required for the PR to be merged.
In order to avoid the PRs becoming stale and requiring to be rebased on master, these can be merged
after a reasonable time (current agreement is 3 days) if the System Test Engineer Owner's sign-off
was not provided (last step in the DoD).

IMPORTANT: Any deviation from the plan should be discussed and agreed as a comment in the Feature file.

Sign-off

• Product Owner
• Dev Owner
• System Test Engineer Owner

Related PRs

1. cardano-testnet executable: take node config file as optional input #6103

[github-actions]

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