CachedConnectionManager isn't functional even in the presence of use-ccm=true on datasource

I have been trying to test the lazy transaction enlistment with datasource connections in the latest upstream. However, it looks like the CachedConnectionManager instance is missing even when the use-ccm is set to true on the datasource configuration. Looking at the integration code in AS7, it appears that the CCMService isn't being used to get hold of the CCM instance and pass it on to the AbstractDsDeployer.