re-add missing _config param for chef registry in ec2_instance dynamic

(cherry picked from commit 014893bbccdde136a729190945a135f813cfc7a5)
Revert "remove first_run.json in favor of existing environment roles"

This reverts commit ceced84e06dc9b2e4d7af04ebca9971cc437699f.

Conflicts:
	cloudformation/registry/chef_metadata.rb

(cherry picked from commit 5bc36522a68b14284f3a7938727f046ecb638520)
remove commented run_list in chef registry

(cherry picked from commit bb09b9f47feca418e4d9d1a45100384e345ee964)
use environment to set platform run_list

(cherry picked from commit 2e1749a0af95143475d58d7e77dce01fa1dec55d)
add a FIXME comment to platform_asg template
remove standalone platform template, rename platform_asg template to platform