One of the Puget Sound region’s oldest aerospace dynasties is ending as Jack Giddens sells his Everett company that finishes metal components for Boeing. It's part of a wave of consolidation among aerospace suppliers. Giddens last week finalized the sale of Blue Streak Finishers, his Everett-based metal finishing company that is one of the region's largest, to Trive Capital of Dallas. The sale also reflect a larger trend: small companies being purchased by large investment groups seeking economies…