integrate stack files into one for faster deployment

[phish108]

The integration testing uses a single stack file, but the deployment uses separate stack files. This separation is unnecessary, as only those parts of the stack are updated that have changed due to the internal docker states.

[phish108]

While working on this issue after one of the hosts crashed, I came across docker/cli#3880

This means that all services that depend on the database need to throttle because docker will not handle dependencies between services at this point

[phish108]

The solution is to deploy the database as a separate stack.

This strategy allows the initializer to complete before the main stack will be deployed. Ansible ensures that both services are up before completing the task and starts deploying the rest.