[IMP][hr_department_sequence] Move warning message directly in the constraint declaration
[IMP][hr_department_sequence] Move warning message directly in the constraint declaration

acsone/hr,Endika/hr,Endika/hr,Vauxoo/hr,open-synergy/hr,thinkopensolutions/hr,xpansa/hr,acsone/hr,hbrunn/hr,VitalPet/hr,Eficent/hr,thinkopensolutions/hr,feketemihai/hr,Vauxoo/hr,open-synergy/hr,feketemihai/hr,Antiun/hr,Eficent/hr,xpansa/hr,microcom/hr,VitalPet/hr,hbrunn/hr,Antiun/hr,microcom/hr