[DRE-maint] ruby-asset-sync is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-asset-sync 1.1.0-2 is marked for autoremoval from testing on 2015-07-10

It (build-)depends on packages with these RC bugs:
784768: libhiredis-dev: Transition to cmake 3.2
787910: ruby-fog-storm-on-demand: fails to upgrade from 'jessie' - trying to overwrite /usr/lib/ruby/vendor_ruby/fog/storm_on_demand/shared.rb