cubicweb-forge #2930535 make tests pass [validation pending]

tests want to connect to centaurus:5432. that doesn't work too well.

prioritynormal
typetask
done in1.10.2
load1.000
load left0.000
closed by#2d34c266b8a6 [test] update FTITC to use an embedded postgres (closes #2930535)
patch[test] update FTITC to use an embedded postgres (closes #2930535) [applied]