Feature: Features render_alter hook addition as in PR #82

## Ready State: Yes

Patch to features module which allows the final outputted code to be alter before being saved to file.
This was added as part of https://imagex.atlassian.net/browse/LDC-217 where is allow wrapping & re-grouping of permissions by module.

## Requirements & Dependencies

Requires PR https://github.com/imagex/imagex_patches/pull/44 to be merged as make file references to the raw patch there.

Or reference can temporarily be set to https://raw.github.com/thomjjames/imagex_patches/feature/features_export_render_alter/contrib/features/features-1317054-81.patch to testing

## Deployment Instructions

* Merge code.

## Usage/Test Instructions

* Run new build with drush make ensure the patch is applied cleanly