A 26-year-old Los Angeles man is set to plead guilty to a 3-year-old storage shed break-in, after he was linked to the crime scene when blood drops at the site were traced to his DNA.In exchange for Yoni Soto Vanega's guilty plea to burglary, his attorney is asking for a 12-30-month sentence.More than $3,500 in tools and equipment were reported stolen March 19, 2009, from a storage shed at a Metcalf Builders site in Indian Hills.Evidence indicated the thief cut the fence and used a wheelbarrow to take compressors, a nail gun, drill, roto-hammer and tool belt.Vanega was identified in …