tests/api/origin_save: Explicitely populate SaveAuthorizedOrigin table
tests/api/origin_save: Explicitely populate SaveAuthorizedOrigin table

The use of django-test-migrations have some unexpected side effect
when building the debian package of swh-web, some default data
added to the SaveAuthorizedOrigin table in initial migrations
end up missing.

So ensure to explicitely fill that table with needed tests data
to avoid some test failures.

Related to T3266

SoftwareHeritage/swh-web-ui,SoftwareHeritage/swh-web-ui,SoftwareHeritage/swh-web-ui