Restore tests that involve ln_setup.connect()

[falexwolf]

We have a few tests that call ln_setup.connect() (aka ln_setup.load()) repeatedly in the same Python session.

These tests were enabled by calling ln_setup.close(), but this never actually shut down the Django session.

Unfortunately, we can currently not switch between different instances in the same Python session.

[Koncopd]

@falexwolf could you write the tests' names to be fixed / restored?

[falexwolf]

There are two instances of this.

One instance is here:

The second instance is here:

I'm thinking very hard about bringing back the ability to connect to different instances in the same Python session, and then we could simply uncomment these tests.

Maybe I can make it work very soon, but I'm still not sure.

[Koncopd]

Both tests worked fine. What changed?

[Koncopd]

Actually connect should throw an error if a cloud sqlite instance is locked.

[falexwolf]

I'm trying to restore tests but this doesn't work: