cubicweb #4469407 missing import of logilab.database in server/__init__.py [validation pending]

it's used when drop=True in init_repository.

prioritynormal
typebug
done in3.19.6
load0.100
load left0.000
closed by#621646d5f010 [server] Add missing import of logilab.database
patch[server] Add missing import of logilab.database [applied]