FOREX-Yen firms on Ukraine tensions, euro braces for inflation test

* Euro wilts as tensions between Ukraine & Russia flare up * Euro zone inflation a further risk after German CPI stays low SYDNEY, Aug 29 (Reuters) - The safe-haven yen held firm early on Friday, while the euro was on track to post its second straight month of declines as tensions between Ukraine and Russia flared up again. Ukraine's president said Russian troops had entered his country in ...