HA testsuite - Switch from UDP to TCP traffic.

[dypet]

Description of PR

Summary:
Fixes # (issue)
Switching the HA test traffic from UDP to TCP.

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• New Test case
  • Skipped for non-supported platforms
• Test case improvement

Back port request

• 202311
• 202405
• 202411
• 202505
• 202511
• 202512
• 202605

Approach

What is the motivation for this PR?

Switch to TCP to exercise stateful TCP connection tracking in DPU.

How did you do it?

Send sync and ack TCP packets during the HA traffic tests.

How did you verify/test it?

Ran HA testsuite on smartswitch HA testbed:

------------ generated xml file: /data/sonic-mgmt/tests/logs/ha.xml ------------
---------------------------- live log sessionfinish ----------------------------
INFO     root:__init__.py:67 Can not get Allure report URL. Please check logs
INFO:root:[Parallel Fixture] Terminating parallel fixture manager
INFO:root:Can not get Allure report URL. Please check logs
=========================== short test summary info ============================
SKIPPED [1] ha/test_ha_planned_swo.py:227: Planned switchover is only supported when owner is 'switch'
SKIPPED [1] ha/test_ha_planned_swo.py:298: Planned switchover is only supported when owner is 'switch'
SKIPPED [2] ha/test_ha_repairing_dpu.py:624: HA repairing tests require exactly 3 or 4 requested DPU hosts
========= 55 passed, 4 skipped, 16405 warnings in 33106.06s (9:11:46) ==========

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[mssonicbld]

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