Issue 6: AppEngine connection provider pool size
Status:  New
Owner: ----
Reported by roland.b...@arcus-business.com, Dec 20, 2014
The GAEConnectionProvider initialises the connection pool with value 20.

https://cloud.google.com/appengine/docs/java/cloud-sql/#Java_Size_and_access_limits

"Each App Engine instance cannot have more than 12 concurrent connections to a Google Cloud SQL instance."

This value should be 12.