Nemesis add network tests

[AleYakovlev]

Changelog entry

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Changelog category

• New feature
• Experimental feature
• Improvement
• Performance improvement
• User Interface
• Bugfix
• Backward incompatible change
• Documentation (changelog entry is not required)
• Not for changelog (changelog entry is not required)

Description for reviewers

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[github-actions]

🟢 2025-07-04 11:27:53 UTC The validation of the Pull Request description is successful.

[github-actions]

⚪ 2025-07-04 11:28:27 UTC Pre-commit check linux-x86_64-relwithdebinfo for 4ca3992 has started.
⚪ 2025-07-04 11:28:38 UTC Artifacts will be uploaded here
⚪ 2025-07-04 11:31:00 UTC ya make is running...
🟡 2025-07-04 11:33:39 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
54	52	0	2	0	0

⚪ 2025-07-04 11:33:47 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-07-04 11:35:13 UTC Some tests failed, follow the links below. Going to retry failed tests...

Test history | Ya make output | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
4 (only retried tests)	2	0	2	0	0

⚪ 2025-07-04 11:35:23 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-07-04 11:37:47 UTC Some tests failed, follow the links below.

Test history | Ya make output | Test bloat | Test bloat | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
4 (only retried tests)	2	0	2	0	0

🟢 2025-07-04 11:37:54 UTC Build successful.
🟡 2025-07-04 11:38:03 UTC ydbd size 2.2 GiB changed* by +395.3 KiB, which is >= 100.0 KiB vs main: Warning

ydbd size dash	main: 429161e	merge: 4ca3992	diff	diff %
ydbd size	2 387 451 792 Bytes	2 387 856 608 Bytes	+395.3 KiB	+0.017%
ydbd stripped size	499 544 232 Bytes	499 602 472 Bytes	+56.9 KiB	+0.012%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2025-07-04 11:28:33 UTC Pre-commit check linux-x86_64-release-asan for 4ca3992 has started.
⚪ 2025-07-04 11:28:46 UTC Artifacts will be uploaded here
⚪ 2025-07-04 11:31:15 UTC ya make is running...
🟡 2025-07-04 11:37:06 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
48	46	0	2	0	0

🟢 2025-07-04 11:37:16 UTC Build successful.
🟢 2025-07-04 11:37:29 UTC ydbd size 3.9 GiB changed* by -815.9 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 46a72a5	merge: 4ca3992	diff	diff %
ydbd size	4 200 822 248 Bytes	4 199 986 768 Bytes	-815.9 KiB	-0.020%
ydbd stripped size	1 455 550 392 Bytes	1 455 231 800 Bytes	-311.1 KiB	-0.022%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}