workaround for micro bosh northeast region

cloud.rb

#  /var/vcap/packages/director/bosh/director/vendor/bundle/ruby/1.9.1/gems/bosh_aws_cpi-0.6.0/lib/cloud/aws/cloud.rb 

          #aki = find_aki(architecture, root_device_name)
          aki = "aki-ee5df7ef"

          # we could set :description here, but since we don't have a
          # handle to the stemcell name and version, we can't set it
          # to something useful :(
          image_params = {
            :name => "BOSH-#{generate_unique_name}",
            #:architecture => architecture,
            :architecture => "x86_64",
            :kernel_id => aki,
            #:root_device_name =>  root_device_name,
            :root_device_name => "/dev/sda",
            :block_device_mappings => {
              "/dev/sda" => { :snapshot_id => snapshot.id },
              "/dev/sdb" => "ephemeral0"
            }
          }