Thermal Boilers don't seem to accept fluids

[IceDragon200]

Need to figure out why

[IceDragon200]

Okay, it's a long story.

First up, YATM broke support with minetest game's default module, this meant that default fluids (water, river_water and lava) were disabled all the time, even when it was supported.

That means that the pump used in the test didn't recognize the fluid it was trying to pump in the first place.

So it wasn't that the boiler wasn't accepting fluids, it just didn't get any fluids to begin with.

So that was finally fixed