opscode/chef — pull request #2196 by siddheshwar-more (2014-10-09 16:29:21+00:00)
Title: [knife-ec2]Command-line options do not take precedence over knife.rb configuration (#247)

@adamedx @muktaa
Issue ref: https://github.com/opscode/knife-ec2/issues/247

Actually issue is with chef where in bootstrap flow knife.rb has precedence over CLI options.
So added changes to support standard precedence level(i.e CLI override knife.rb).