AUSTIN — When Gov. Rick Perry tried to force a district attorney from office for drunken driving, he cited outrage at her behavior and a loss of confidence in her ability to do the job.But on his own staff, Perry has hired and promoted a top adviser with three intoxication offenses on his record.Wayne Roberts, who now heads up the governor’s signature creation, the Cancer Prevention and Research Institute of Texas, was convicted of driving while intoxicated in 1990 and 2006. He also was fined in 2000 on a charge of public intoxication in Virginia.Perry made him budget director in December 2001 and appointed him to the State Pension Review Board in 2009. The board of the cancer fund, known as CPRIT, appointed Roberts to his current position, and three of the board members were selected by Perry. At both the pension board and CPRIT, Roberts oversees billions of state dollars.