Move resource-adapters configuration style more adaptable to Spring/OpenShift based datasources

The current configuration in the resource-adapters, i.e. ManagedConnectionFactory and managed connection are so tightly integrated with JCA semantics that use of this connection code else where in environments like Spring Boot or Embedded or OpenShift makes it either cumbersome or impossible.

All resource-adapter modules need to be refactored such that JCA semantics are add-ons rather than main part of it.