Update default nodejs version to 0.10.27

cr https://cr.amazon.com/r/2403198/
fixed non-existent database_info function in rails::configure

cr https://cr.amazon.com/r/2412597/
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.
Revert "fixed non-existent database_info function in rails::configure"

This reverts commit 6702011a6345da61a1361ed72188341e42d3d2fc.
Revert "fixed broken check for database adapter in"

This reverts commit ed9b1d9062746b38e599a6e7d6fc97ac183775ee.
Revert "added attribute to deploy cookbook to set a default for"

This reverts commit 804d24d19d2650745f0ea156fc844fba870974c9.
Revert "changed rails cookbook to map adapter=mysql to adapter=mysql2 if using"

This reverts commit eda2d98c2a905e727291fa7c31c1841b8f22e7f9.
Revert "changed rails adapter function to return mysql2 instead of mysql if an"

This reverts commit 80c6e69d176263d2a141e7c273a4b45dbab5bb89.
Revert "added missing code to pass the java driver class to the webapp_context"

This reverts commit 92b7932933164affe7df8aeccfe74a2230f5e392.
Revert "added missing dependency on deploy cookbook to php and opsworks_java"

This reverts commit 5242c40e02491f07c134375fe941d4ba46367135.
Revert "changed default port on app/database info to be set by the deploy"

This reverts commit 8b038e45e99082deb9995c7eb0c91b331c6f4032.
Revert "changed the php, rails and java cookbooks to use an attribute instead of"

This reverts commit fde7d735501ab1e12962c50763a6acfa6ff6916d.
Revert "Changes to rails, PHP and Java to support RDS. Currently only rails"

This reverts commit 976dda7965dd3ed6a08a971a72fbd293317580f2.
Revert changes for RDS support.