[DOP-22297] Parallel reading from JDBC sources #1208

Job	Run time
Oracle tests / Run Oracle tests	2m 49s
MySQL tests / Run MySQL tests	2m 41s
Hive tests / Run Hive tests	2m 34s
S3 tests / Run S3 tests	3m 14s
MSSQL tests / Run MSSQL tests	2m 22s
HDFS tests / Run HDFS tests	3m 30s
Clickhouse tests / Run Clickhouse tests	3m 4s
SFTP tests / Run SFTP tests	2m 34s
Unit tests / Run unit tests	2m 15s
FTPS tests / Run FTPS tests	2m 6s
Samba tests / Run Samba tests	2m 7s
Scheduler tests / Run Scheduler tests	1m 51s
FTP tests / Run FTP tests	1m 58s
WebDAV tests / Run WebDAV tests	2m 53s
Tests done	-1s
	35m 57s

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