[DOP-22297] Parallel reading from JDBC sources #1210

Job	Run time
Oracle tests / Run Oracle tests	5m 22s
Clickhouse tests / Run Clickhouse tests	5m 41s
MySQL tests / Run MySQL tests	4m 33s
SFTP tests / Run SFTP tests	4m 47s
Hive tests / Run Hive tests	5m 6s
MSSQL tests / Run MSSQL tests	4m 45s
HDFS tests / Run HDFS tests	8m 30s
Scheduler tests / Run Scheduler tests	2m 21s
S3 tests / Run S3 tests	8m 51s
FTPS tests / Run FTPS tests	4m 50s
Unit tests / Run unit tests	4m 0s
FTP tests / Run FTP tests	7m 48s
WebDAV tests / Run WebDAV tests	4m 37s
Samba tests / Run Samba tests	4m 47s
Tests done	22s
	1h 16m 20s

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