Greece sold 1.138 billion euros ($1.27 billion) of six-month Treasury bills on Wednesday, covering the amount it wanted to refinance a maturing issue, in a sale that tested the country's ability to raise funds amid a cash crunch. Issuing T-bills is the only source of commercial borrowing for the leftist government of Prime Minister Alexis Tsipras but the country's EU/IMF creditors have set a 15 ...