Adding ohai hints, replaces #102

Author: tyler-ball

.cane

@@ -1,2 +1,2 @@
---abc-max 20
+--abc-max 30
 --style-measure 100

lib/kitchen/driver/ec2.rb

@@ -22,6 +22,7 @@
 require "retryable"
 require "kitchen"
 require "kitchen/driver/ec2_version"
+require "kitchen/ec2/iam_credentials_fetcher"
 
 module Kitchen
 
@@ -191,6 +192,7 @@ def create(state) # rubocop:disable Metrics/AbcSize, Metrics/MethodLength
         info("EC2 instance <#{state[:server_id]}> ready.")
         state[:hostname] = hostname(server)
         instance.transport.connection(state).wait_until_ready
+        create_ec2_json(state)
         debug("ec2:create '#{state[:hostname]}'")
       end
 
@@ -240,13 +242,13 @@ def default_aws_session_token
         env
       end
 
-      def iam_credentials_fetcher
+      def fetcher
         @fetcher ||= Kitchen::EC2::IamCredentialsFetcher.new(logger)
       end
 
       # Simple delegate to the iam credentials fetcher
       def iam_creds
-        @fetcher.iam_creds
+        fetcher.iam_creds
       end
 
       private
@@ -489,6 +491,12 @@ def wait_for(&block)
         )
       end
 
+      def create_ec2_json(state)
+        instance.transport.connection(state).execute(
+          "sudo mkdir -p /etc/chef/ohai/hints;sudo touch /etc/chef/ohai/hints/ec2.json"
+        )
+      end
+
     end
   end
 end