MNHA: Split-brain protection support for BFD- based probing

We introduce Bidirectional Forwarding Detection (BFD)-based probing for split-brain protection in Multinode High Availability. This enhancement allows you to use fine-grained control over the probing parameters, providing you the ability to specify the interface, set the minimal-interval, and define the multipliers.BFD-based probing starts immediately after configuring a service redundancy group (SRG) resulting in quicker response times, providing a significant improvement in the containment of potential splitbrain scenarios.