Don't use MultiStrOpt
Don't use MultiStrOpt

ListOpt looks more appropriate for 'default_aggregation_methods':

  [archive_policy]
  default_aggregation_methods = mean,min,max,sum,std,median,count,last,95pct

than MultiStrOpt:

  [archive_policy]
  default_aggregation_methods = mean
  default_aggregation_methods = min
  default_aggregation_methods = max
  default_aggregation_methods = sum
  default_aggregation_methods = std
  default_aggregation_methods = median
  default_aggregation_methods = count
  default_aggregation_methods = last
  default_aggregation_methods = 95pct

Change-Id: I33442bc29e76dca83c073ac1163c2e35e743220c

idegtiarov/gnocchi-rep,gnocchixyz/gnocchi,sileht/gnocchi,sileht/gnocchi,idegtiarov/gnocchi-rep,idegtiarov/gnocchi-rep,gnocchixyz/gnocchi,leandroreox/gnocchi,leandroreox/gnocchi