AWS log group subscriber

Lambda function that creates subscription filters for other lambda function.

                         ---------------------------------------
   CloudWatch Event     |   log-subscriber-function             |
   (every 5 minutes)    |   1. Get all log groups               |
----------------------> |   2. Group all missing subscriptions  |
                        |   3. Create subscription filters      |
                        |                                       |
                         ---------------------------------------

To build run commend below. It compiles sources to main binary file and zips it to deployment package deployment-123456789.zip

./build.sh

To deploy to AWS with cloudformation template use deploy.sh script