move sql files in the python package qand update tests according to D538

also delete unused file swh-scheduler-testdata.sql and fix sql/Makefile and sql/updater/sql/Makefile to make them properly generate svg/pdf images and make.

Related to swh-storage#1265 (closed).

Test Plan

all tests should pass provided swh-core!16 (closed) is applied in swh-core

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Migrated from D541 (view on Phabricator)

Some references in the commit message have been migrated:

• T1265 is now swh-storage#1265 (closed)

Some references in the commit message have been migrated:

• T1265 is now swh-storage#1265 (closed)

Merge request was accepted

approved this merge request

Merge request was merged

closed