ATHENS (Reuters) - Greece's traditional ruling parties agreed a coalition government on Wednesday and said they would form a team to renegotiate the punishing terms of a bailout that is staving off bankruptcy but fuelling rising social tensions. The government brings together the conservative New Democracy party and Socialist PASOK in an uneasy alliance of rivals facing an emboldened opposition vehemently opposed to the austerity conditions attached to the country's financial lifeline. Party leaders said a team would be formed to renegotiate the terms of the 130 billion euro ($164. ...