Use application name from EB
Use application name from EB

Ideally the log stream name would be created in Mapings section and just
used by in the Resources section but CloudFormation doesn't seem to like
using Fn::Join there.

RichardKnop/digitalmarketplace-api,RichardKnop/digitalmarketplace-api,mtekel/digitalmarketplace-api,alphagov/digitalmarketplace-api,mtekel/digitalmarketplace-api,mtekel/digitalmarketplace-api,alphagov/digitalmarketplace-api,RichardKnop/digitalmarketplace-api,alphagov/digitalmarketplace-api,RichardKnop/digitalmarketplace-api,mtekel/digitalmarketplace-api