Expose layers and hosts in opsworks.js.
Make the port for Node.js apps configurable and make it available to apps as PORT environment variable.
Add X-Request-Start header to nginx/unicorn Rails app configuration for NewRelic request queueing
Test whether RAID is considered as clean.
Changes to rails, PHP and Java to support RDS. Currently only rails
supports postgres

cr https://cr.amazon.com/r/2369582/
changed the php, rails and java cookbooks to use an attribute instead of
if/else in the template to handle the new port field in the database
config
changed default port on app/database info to be set by the deploy
cookbook, and fixed adapter field to reflect that it is now mapped in
the config JSON
added missing dependency on deploy cookbook to php and opsworks_java
cookbooks
added missing code to pass the java driver class to the webapp_context
template when the database is postgresql
Add create_dirs_before_symlink as app attribute.
changed rails adapter function to return mysql2 instead of mysql if an
RDS mysql instance is passed
changed rails cookbook to map adapter=mysql to adapter=mysql2 if using
RDS
Reverted mistakenly added RDS changes which were not tested enough before
pushing
added attribute to deploy cookbook to set a default for
:data_source_provider in each application's database section
fixed broken check for database adapter in rails/libraries/rails_configuration.rb
Map local hostname to 127.0.1.1.

Correct format per entry: IP FQDN SHORT
Merge branch 'rds-chef-11.4' into master-chef-11.4

Conflicts:
	rails/libraries/rails_configuration.rb
Update default nodejs version to 0.10.27

cr https://cr.amazon.com/r/2403206/
fixed non-existent database_info function in rails::configure

cr https://cr.amazon.com/r/2412599/
Revert "Add X-Request-Start header to nginx/unicorn Rails app configuration for NewRelic request queueing" as it's not supported by nginx 1.1.19.

This reverts commit 7fa3d1fe6e2551041ca06e42880b2ff89c956404.