do not pollute root namespace

I am using the Azure gem in a project and had some wired problems defining a `Location` class. After some investigation I found out that the class clashes with the Azure::BaseManagement::Location class. This is because of the line `include Azure::BaseManagement` in `lib/azure/base_management/base_management_service.rb`. This is really bad as it messes with the root namespace. I removed the `include` and fixed all references. All tests are passing. I did the same with the `Loggerx` and the include of the core utils.