TEMPE, Ariz. (AP) - The Arizona Cardinals have filled the NFL's final head coaching vacancy by hiring Indianapolis offensive coordinator Bruce Arians.The team confirmed the hiring in a release Thursday night, saying Arians received a four-year contract with a club option for a fifth year.The 60-year-old longtime assistant went 9-3 as Colts interim head coach while Chuck Pagano was undergoing treatment for leukemia last season.Arians arrived in Arizona on Wednesday night, had dinner with top team officials, then interviewed on Thursday and met with reporters to indicate his interest in the job. He was offered and accepted the job Thursday …