Calculate the presigned url after the md5 check as it may timeout when the existing file is very large
Calculate the presigned url after the md5 check as it may timeout when the existing file is very large

Signed-off-by: Mark Unsworth <f1b5a91d4d6ad523f2610114591c007e75d15084@knowsis.com>

opscode-cookbooks/aws,scalp42/aws,chef-cookbooks/aws,paybyphone/aws