NEW YORK — A new player in the convenience-store industry could grow to as many as 400 locations in the next three years if its acquisition pipeline holds up. The company, Corniche Capital, is under contract to acquire 12 c-stores in New Mexico before the end of the year. Although executives did not identify the seller, David Ebrahimzadeh, president and CEO of Corniche Capital, said he sees an opportunity to “become a contender” in the industry. “We recognize the fierce compe