[Fixes #12862] Allow to add metadata when uploading a resource

[ridoo]

[Currently work in progress]

Reads and passes custom json payload during upload to be set on the new geonode resource. Should work also for resources which shall be overridden.

This PR contains some fixes/changes of seemingly unrelated parts where errors occured during testing. The proposed changes have to be reviewed and discussed first. Chances are that I missed important parts. However, this PR reveals those locations better than my comment on the related issue.

Referenced ticket: #12862

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[ridoo]

@mattiagiupponi not sure if you had a look already .. but I saw this issues which seems to be related to this one and already got merged.

[mattiagiupponi]

@mattiagiupponi not sure if you had a look already .. but I saw this issues which seems to be related to this one and already got merged.

Hi @ridoo
That was a small patch for 44x, this i think should go only on master branch.
I'll give a look at the PR on monday morning :)

[ridoo]

No problem at all. Thanks for the info. Have a nice weekend!

[mattiagiupponi]

HI @ridoo
Overall looks good, can you please add a couple of tests?

1. a smoke test for the new storer (like it was done here for the region one)
2. A test where the upload workflow works as expected and the metadata are updated

[ridoo]

@mattiagiupponi locally my tests run fine 🤔 Do you have an idea?

To be honest, I have some troubles running your really complex test suite. What I am doing is just skipping the test.sh and run python manage.py test <test_module> --keepdb on the running docker images after preparing the test_geonode database.