Prioritize Unique Management IP Over Shared/VRRP IP During Discovery

NetBrain's discovery process can select a shared or virtual IP address, such as a VRRP address, as a device's management IP even when a unique IP address is also available for that device. Because a shared IP does not reliably identify a single device and may move between devices over time, this can lead to configuration retrieval failures and inconsistent device identification during troubleshooting. This enhancement proposes adding logic to the discovery process that prioritizes a unique IP address over a shared or virtual IP whenever both are available, avoiding reliance on shared addressing for device identification. Customers would benefit from more reliable device identification and configuration retrieval, and would no longer need to manually lock management IP settings on individual devices as a workaround, reducing administrative overhead and preserving discovery automation.