Support Device Management IP as Target for Runbook Ping Node

The Runbook Ping node currently limits selectable target IPs to a device's known interface addresses, with no option to specify a management IP that falls outside those interfaces. This becomes a limitation when a device's management IP is reached through NAT translation, since none of the listed interface IPs are actually reachable for connectivity testing. This enhancement would allow the Ping node to accept and target a device's management IP directly, even when that IP is not one of the device's native interface addresses. Supporting this option would allow customers with NAT-translated management access to run accurate connectivity checks within Runbooks, reducing manual workarounds and improving diagnostic reliability.