Version bump and CHANGELOG update after branching out for 7.2.0.
Bump ffi version to something compatible with chef.
Merge pull request #349 from opscode/sersut/ffi-bump

Bump ffi version to something compatible with chef.
Save IAM security credentials only if hint is present
Filter IAM from metadata unless 'iam' hint is present.
Merge pull request #350 from opscode/mcquin/chef-1558

Save IAM security credentials only if hint is present
add Object#to_json monkeypatches

because the JSON gem has infected the universe with them and I don't
have time to clean it all up right now.
Merge pull request #358 from opscode/lcg/add-json-compat

add Object#to_json monkeypatches
fix newlines in platform/platform_family

follows the pattern used by all the other plugins to strip off
the newlines (not sure why we don't just use .chomp, but i'm being
consistent with all the rest of the code)
Merge pull request #361 from opscode/lcg/aix-newlines-fix

fix newlines in platform/platform_family
Merge commit '3b18b074b792ec81acd989cfe609fd23476d5314' into 7-stable

Conflicts:
	CHANGELOG.md
	lib/ohai/version.rb
bump version to 7.2.0 for release