By Sruthi Shankar, Bansari Mayur Kamdar and Susan Mathew (Reuters) – German shares vaulted almost 8% to lead strong gains across European stocks markets on Wednesday, as investors picked up beaten-down stocks following a rout sparked by fears about the fallout from the Ukraine crisis. Italian and French shares jumped around 7% each, while the pan-European STOXX 600 index rallied 4.7% for its best session in two years. The STOXX 600 broke a four-day losing streak during which it lost about 7%, hit by the threat of a Russian oil imports ban. On Tuesday, German and Italian shares closed 20% below…