Add hints about where to find test logs

Author: strtgbb

tests/README.md

@@ -17,6 +17,8 @@ I recommend not running suites with the `s3 storage` option as that requires ext
 python -m ci.praktika run "Stateless tests (amd_debug, sequential)"
 ```
 
+Logs can be found in `ci/tmp` and `ci/tmp/var/log/clickhouse-server`.
+
 ### One Test
 
 Running a single test can be done with bare `clickhouse-test` or with the `praktika` utility.
@@ -38,6 +40,8 @@ then, in another window:
 tests/clickhouse-test -b ci/tmp/clickhouse 03222_pr_asan_index_granularity
 ```
 
+Logs will get written into the `tests/queries/0_stateless` folder.
+
 #### praktika
 
 ```sh
@@ -61,6 +65,8 @@ https://github.com/ClickHouse/ClickHouse/blob/master/tests/integration/README.md
 python -m ci.praktika run "Integration tests (amd_binary, 4/5)"
 ```
 
+Logs can be found in `ci/tmp` and `ci/tmp/var/log/clickhouse-server`.
+
 ### One Test
 
 ```sh
@@ -72,4 +78,6 @@ Docker images may or may not need to be specified. Get the tags by examining ci
 Search logs for `integration-test`, look for `"altinityinfra/integration-tests-runner": "72c567235d2f7658765b"`
 and `"altinityinfra/integration-test": "9c789665fa1f2c3b60a8"`
 
+Logs are written to the local dir, which is `tests/integration` in this example.
+
 Note: `runner` has been removed from 25.9 onwards.