Implements Golden Ticket retry mechanism

[abdulazeem-tk4vr]

Enhances Golden Ticket acquisition robustness by introducing a retry strategy. This allows nodes to more reliably obtain and renew their admin certificates, even in the face of transient network issues or temporary server unavailability.

Key changes include:

• Defines a configurable goldenTicketRetryInterval network parameter to control retry timing.
• Refactors the Golden Ticket fetch process to classify errors as either retryable (e.g., network failures, temporary server errors) or terminal (e.g., unregistered public key).
• Integrates a retry mechanism that schedules subsequent fetch attempts for retryable errors and expired Golden Tickets, preventing continuous failures.
• Adds comprehensive unit tests to validate the new retry and error classification logic.