Describe the bug
A primitive pump pumps only vanilla water.

Versions
Forge: 2860
GTCE: 2.0.2-beta
Modpack: TFG R3.0

Setup
Playing Solo/Multiplayer/Both

Steps To Reproduce

1. I built a primitive pump
2. But I get vanilla water

Expected behavior
A primitive pump was supposed to extract water from TFC (salty or fresh).

Additional context
I would suggest adding a configuration where you can specify what kind of liquid the primitive pump produces. This will be useful not only for my modpack.
Like this:

# The liquid produced by a primitive pump.
# Useful for mods like TerraFirmaCraft with different Fluids for Water
# Default: water
S:PrimitivePumpFluid <
   salt_water
>

I haven't seen motivation to implement this since this came up.
If motivation arises again we can re-open it and maybe implement it.