Replace SessionPool with QuerySessionPool in ttl/test_ttl.py

[ggerlakh]

Changelog entry

...

Changelog category

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

Additional information

Try to replace SessionPool with new QuerySessionPool in python test (ydb/tests/functional/ttl/test_ttl.py)

[github-actions]

Hi! Thank you for contributing!
The tests on this PR will run after a maintainer adds an ok-to-test label to this PR manually. Thank you for your patience!

[github-actions]

⚪ 2025-01-04 15:07:00 UTC Pre-commit check linux-x86_64-relwithdebinfo for 235e425 has started.
⚪ 2025-01-04 15:07:10 UTC Artifacts will be uploaded here
⚪ 2025-01-04 15:09:37 UTC ya make is running...
🟡 2025-01-04 15:11:15 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?
12	7	0	5	0	0

⚪ 2025-01-04 15:11:23 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-01-04 15:12:12 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?
10 (only retried tests)	5	0	5	0	0

⚪ 2025-01-04 15:12:19 UTC ya make is running... (failed tests rerun, try 3)
🔴 2025-01-04 15:13:05 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?
10 (only retried tests)	5	0	5	0	0

🟢 2025-01-04 15:13:11 UTC Build successful.
🟢 2025-01-04 15:13:22 UTC ydbd size 2.1 GiB changed* by -58.8 KiB, which is <= 0 Bytes vs main: OK

ydbd size dash	main: d9cdc77	merge: 235e425	diff	diff %
ydbd size	2 243 684 648 Bytes	2 243 624 408 Bytes	-58.8 KiB	-0.003%
ydbd stripped size	472 256 976 Bytes	472 254 992 Bytes	-1.9 KiB	-0.000%

^{*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]

⚪ 2025-01-04 15:09:58 UTC Pre-commit check linux-x86_64-release-asan for 235e425 has started.
⚪ 2025-01-04 15:10:10 UTC Artifacts will be uploaded here
⚪ 2025-01-04 15:12:38 UTC ya make is running...
🟡 2025-01-04 15:14:34 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

Test history | Ya make output | Test bloat

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10	5	0	5	0	0

⚪ 2025-01-04 15:14:42 UTC ya make is running... (failed tests rerun, try 2)
🟡 2025-01-04 15:15:28 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet Going to retry failed tests...

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10 (only retried tests)	5	0	5	0	0

⚪ 2025-01-04 15:15:35 UTC ya make is running... (failed tests rerun, try 3)
🟡 2025-01-04 15:16:21 UTC Some tests failed, follow the links below. This fail is not in blocking policy yet

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

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10 (only retried tests)	5	0	5	0	0

🟢 2025-01-04 15:16:27 UTC Build successful.
🟢 2025-01-04 15:16:42 UTC ydbd size 3.6 GiB changed* by -96 Bytes, which is <= 0 Bytes vs main: OK

ydbd size dash	main: 1d8fe0a	merge: 235e425	diff	diff %
ydbd size	3 872 732 600 Bytes	3 872 732 504 Bytes	-96 Bytes	-0.000%
ydbd stripped size	1 350 439 952 Bytes	1 350 439 888 Bytes	-64 Bytes	-0.000%

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