tests/e2e: add test for tcp egress

[shashankram]

Description:
Adds e2e test for testing TCP egress traffic.

Part of #1521

Affected area:

• New Functionality [ ]
• Documentation [ ]
• Install [ ]
• Control Plane [ ]
• CLI Tool [ ]
• Certificate Management [ ]
• Networking [ ]
• Metrics [ ]
• SMI Policy [ ]
• Security [ ]
• Tests [X]
• CI System [ ]
• Performance [ ]
• Other [ ]

Please answer the following questions with yes/no.

• Does this change contain code from or inspired by another project? If so, did you notify the maintainers and provide attribution?
  No

[codecov-io]

Codecov Report

Merging #2230 (dd656f0) into main (932c691) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2230      +/-   ##
==========================================
- Coverage   57.75%   57.73%   -0.02%     
==========================================
  Files         145      145              
  Lines        6299     6299              
==========================================
- Hits         3638     3637       -1     
- Misses       2657     2658       +1     
  Partials        4        4              

Impacted Files	Coverage Δ
pkg/envoy/route/config.go	95.23% <0.00%> (-0.80%)	⬇️

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