Add pip back to docker images #1747

Job	Run time
Hive tests / Run Hive tests	7m 21s
Clickhouse tests / Run Clickhouse tests	9m 0s
HDFS tests / Run HDFS tests	10m 36s
S3 tests / Run S3 tests	10m 18s
Oracle tests / Run Oracle tests	6m 57s
MySQL tests / Run MySQL tests	6m 33s
MSSQL tests / Run MSSQL tests	6m 36s
Iceberg tests / Run Iceberg tests	7m 10s
Samba tests / Run Samba tests	6m 2s
Unit tests / Run unit tests	2m 25s
Scheduler tests / Run Scheduler tests	4m 23s
FTPS tests / Run FTPS tests	6m 18s
WebDAV tests / Run WebDAV tests	6m 10s
SFTP tests / Run SFTP tests	5m 43s
FTP tests / Run FTP tests	9m 39s
Tests done	20s
	1h 45m 31s

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