Add support for platform "amazon" in accordance to my agreement with treasure-data/chef-td-agent current maintainer, repeatedly@gmail.com.  As per issue, Uneccesarly strick platform check #18,   "We don't have a test environment for Amazon Linux and we don't guarantee td-agent works on Amazon Linux.   If it is OK, please send a PR :)" Done.
Add support for platform "amazon" in accordance to my agreement with treasure-data/chef-td-agent current
maintainer, repeatedly@gmail.com.  As per issue, Uneccesarly strick platform check #18,
  "We don't have a test environment for Amazon Linux and we don't guarantee td-agent works on Amazon Linux.
  If it is OK, please send a PR :)"
Done.

thanks!

joeyAghion/chef-td-agent,joeyAghion/chef-td-agent,i/chef-td-agent,ikkyotech/OpsworksNodeAddons,PerfectMemory/chef-td-agent,benvaljean/chef-td-agent,benvaljean/chef-td-agent,ikkyotech/OpsworksNodeAddons,treasure-data/chef-td-agent,treasure-data/chef-td-agent,treasure-data/chef-td-agent,ijin/chef-td-agent,PerfectMemory/chef-td-agent,ijin/chef-td-agent,i/chef-td-agent