By Kate Holton LONDON (Reuters) -Shares in Vodafone edged higher on Monday as a surprise $4.4 billion investment from the UAE-based telecoms company e& provided a much needed but possibly short-term boost to the British firm’s CEO Nick Read. The company previously known as Etisalat said on Saturday it had become the largest shareholder in Vodafone with a 9.8% stake, attracted to its management, its efforts to unlock value and a diversified currency base. It ruled out exerting control or launching a full takeover. Analysts were divided however over the group’s long-term plan, after activist inv…