By Jamie McGeever and Emelia Sithole-Matarise LONDON (Reuters) - The Greek crisis may be approaching its end game but some investors are waiting for the dust to settle and snap up euro zone stocks and bonds - whether a deal to prevent Athens defaulting is reached or not. Failure to reach agreement with international creditors will see Greece default on 1.6 billion euros of debt repayments to the International Monetary Fund due on June 30, a scenario that could ultimately lead to it exiting the euro zone. ...