Add Deactivate Feature Flag to CLI Local Validator

[amilz]

Adds support for --deactivate-feature flag to the solana-test-validator config in Anchor.toml. User must pass an array of feature pubkeys.

Example Anchor.toml

[test.validator]
bind_address = "0.0.0.0"
url = "https://api.mainnet-beta.solana.com"
ledger = ".anchor/test-ledger"
rpc_port = 8899
slots_per_epoch = "32"
warp_slot = "18464"
deactivate_feature = ["GDH5TVdbTPUpRnXaRyQqiKUa7uZAbZ28Q2N9bhbKoMLm", "zkiTNuzBKxrCLMKehzuQeKZyLtX2yvFcEKMML8nExU8"]

After local validator is running you can run solana feature status -ul to check that features are deactivated.

Changes

• add deactivate_feature to Validator struct and relevant impls in CLI config
• create pubkey validation parsing for deactivate_feature in validator_flags function

Fixes #2871

Ref

• Solana Cookbook - parity testing
• Solana Validator CLI: Deactivate Features args

[vercel]

@amilz is attempting to deploy a commit to the coral-xyz Team on Vercel.

A member of the Team first needs to authorize it.

[acheroncrypto]

This looks great, and thanks for the explanation!

Before we merge, could you also note this feature in the CHANGELOG?

[acheroncrypto]

Please run cargo fmt to fix the CI error.

[acheroncrypto]

Thank you!