Add SolverConstraintOperator.INTEGER_value case and in the same time
the also missing SolverConstraintOperator.BINARY_value case

Change-Id: I18b826e74a2381dedaea3090919118b8d5dad072
Reviewed-on: https://gerrit.libreoffice.org/56359
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>