[DOP-22297] Parallel reading from JDBC sources (#219) #1213

Job	Run time
SFTP tests / Run SFTP tests	4m 34s
FTPS tests / Run FTPS tests	4m 36s
FTP tests / Run FTP tests	7m 28s
WebDAV tests / Run WebDAV tests	4m 48s
Samba tests / Run Samba tests	4m 29s
Clickhouse tests / Run Clickhouse tests	5m 38s
S3 tests / Run S3 tests	8m 29s
Scheduler tests / Run Scheduler tests	2m 21s
HDFS tests / Run HDFS tests	8m 30s
Unit tests / Run unit tests	3m 56s
Hive tests / Run Hive tests	4m 58s
MSSQL tests / Run MSSQL tests	4m 49s
MySQL tests / Run MySQL tests	4m 44s
Oracle tests / Run Oracle tests	5m 17s
Tests done	15s
	1h 14m 52s

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