Ian Foster might never convince his detractors he was the right man to replace Steve Hansen as All Blacks coach at the end of 2019.  Only hoisting the Webb Ellis Cup in France in a couple of years will bury his many critics, many of whom were desperate for ultra-successful Crusaders coach Scott Robertson to land the job.  However, they’ve been somewhat quiet in recent months, hushed by an ever-improving record under 56-year-old Foster, who must quietly be chuffed with the way his second year in charge is tracking.  Fresh from beating Italy 47-9 in Rome on the back of…