AGREEMENT AND PLAN OF MERGER by and among DIGITAL REALTY TRUST, INC., DIGITAL REALTY TRUST, L.P., PENGUINS REIT SUB, LLC, PENGUINS OP SUB, LLC, PENGUINS OP SUB 2, LLC, DUPONT FABROS TECHNOLOGY, INC., and DUPONT FABROS TECHNOLOGY, L.P. dated as of June...