Update CDN domain for bundle reference in Logic Apps Docker image

We need to change from `functionscdn.azureedge.net` to `cdn.functions.azure.com`

In this repo, it should just be a change to the following definition:

https://github.com/Azure/logicapps-docker/blob/cd1a5702c627447c48e18455f12876b6ee412b45/host/base/host.DockerFIle#L11