The direct loading of drivers was deprecated in Liberty and noted
to be removed in Newton. This patch cleans up the deprecation and
fixes the unit tests. Some of the example request/response json
message bodies of the domain config API were also updated to the
correct way of loading a driver now.
bp removed-as-of-rocky
Change-Id: If3f4c2303da6e264e5e0d73280cc21fa01a3cfd4
8fb4b79808