By Nupur Anand NEW YORK (Reuters) -JPMorgan Chase appointed Francisco Abularach and Michael Johnson as its new global co-heads of infrastructure investment banking, according to a memo seen by Reuters on Thursday. The move comes as dealmaking picks up in the sector. Infrastructure private equity coverage is an important strategic growth area for the bank, according to the memo. Abularach joined the largest U.S. lender in July after 26 years at Citigroup. Johnson has been with the bank for seven years, a ...