Add ARP wait utilities for IPv4 and IPv6 in traceroute packetin tests

[karthikeya-remilla]

This is standard procedure used across many FNT tests after ate.OTG().StartProtocols(t).

This is needed to improve success rate of P4RT-5.1 and avoid transient ARP issues.

[gemini-code-assist[bot]]

Summary of Changes

Hello @karthikeya-remilla, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request aims to bolster the stability and success rate of traceroute packet-in tests, particularly for P4RT-5.1, by addressing transient ARP resolution issues. It achieves this by incorporating standard ARP wait utilities for both IPv4 and IPv6, ensuring that ARP entries are properly resolved after network protocols are initiated before test execution proceeds.

Highlights

• Improved Test Reliability: Introduced explicit wait mechanisms for ARP resolution for both IPv4 and IPv6 within the traceroute packet-in tests.
• New Utility Import: The otgutils package has been imported into traceroute_packetin_test.go to leverage its ARP waiting functionalities.

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[OpenConfigBot]

Pull Request Functional Test Report for #4769 / 54169408ffd5b461747bf1e079a3a294928cb7ee

Virtual Devices

Device	Test	Test Documentation	Job	Raw Log
Arista cEOS		P4RT-5.1: Traceroute: PacketIn
Cisco 8000E		P4RT-5.1: Traceroute: PacketIn
Cisco XRd		P4RT-5.1: Traceroute: PacketIn
Juniper ncPTX		P4RT-5.1: Traceroute: PacketIn
Nokia SR Linux		P4RT-5.1: Traceroute: PacketIn
Openconfig Lemming		P4RT-5.1: Traceroute: PacketIn

Hardware Devices

Device	Test	Test Documentation	Raw Log
Arista 7808		P4RT-5.1: Traceroute: PacketIn
Cisco 8808		P4RT-5.1: Traceroute: PacketIn
Juniper PTX10008		P4RT-5.1: Traceroute: PacketIn
Nokia 7250 IXR-10e		P4RT-5.1: Traceroute: PacketIn

Help

[coveralls]

Pull Request Test Coverage Report for Build 18969636485

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 11.082%

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Totals
Change from base Build 18964170800:	0.0%
Covered Lines:	2224
Relevant Lines:	20068

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💛 - Coveralls