[DOP-22139] Reset HWM when changing strategy (#217) #1205

Job	Run time
Clickhouse tests / Run Clickhouse tests	7m 39s
Oracle tests / Run Oracle tests	7m 34s
Scheduler tests / Run Scheduler tests	4m 31s
SFTP tests / Run SFTP tests	6m 38s
MSSQL tests / Run MSSQL tests	7m 17s
S3 tests / Run S3 tests	11m 6s
HDFS tests / Run HDFS tests	10m 42s
FTPS tests / Run FTPS tests	6m 56s
FTP tests / Run FTP tests	9m 45s
WebDAV tests / Run WebDAV tests	7m 20s
MySQL tests / Run MySQL tests	7m 10s
Hive tests / Run Hive tests	7m 10s
Samba tests / Run Samba tests	7m 3s
Unit tests / Run unit tests	3m 41s
Tests done	13s
	1h 44m 45s

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