salt-cubicweb-formula #5438073 add an option in pillar to make the postgres user a superuser [in-progress]

add an option in pillar to make the postgres user a superuser

prioritynormal
typebug
done in0.1.0
load0.100
load left0.000
closed by<not specified>
patch[postgres] add an option in pillar to make the postgres user a superuser (closes #5438073) [in-progress]