Update CRIB config to support GAP v2

[chainchad]

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Below is a summarization created by an LLM (gpt-4-0125-preview). Be mindful of hallucinations and verify accuracy.

Why

The changes streamline the connection configuration for simulated CRIB environments, removing deprecated headers and simplifying the process to connect through GAP or locally. It enhances maintainability and clarity in the codebase by removing unused or unnecessary elements.

What

• lib/crib/config.go
  • Removed the import statement for net/http as it is no longer necessary.
  • Deleted the HostHeader constant, simplifying the configuration by removing unused headers.
  • In CoreDONConnectionConfig struct, removed fields related to headers (NodeHeaders, BlockchainNodeHeaders, MockserverHeaders) that are no longer needed for establishing connections.
  • Updated CoreDONSimulatedConnection function to:
    • Remove the creation and assignment of node and blockchains headers as these are no longer required.
    • Add conditional logic for connecting to CRIB using GAP based on an environment variable, making the GAP connection process more explicit and configurable.
    • Simplify the local connection setup by directly assigning URLs without unnecessary headers, improving the readability and maintainability of the connection setup process.

[chainchad]

Looks like the CRIB connector is legacy/deprecated.