I had the same problem in my environment.
Here are the steps how i did solve this issue
Since VMM 2012 R2 Requires ADK 8.1 and this requires SQL 2012 Express.
In order SQL Server 2012 to be installed successfully .Net Frame Work 3.5 feature on Windows Server has to be enabled first, in this case it is not not being installed by ADK Installation wizard as a result SQL service fails to start, which results on VMM installation to fail.
Please try to enable .Net Frame Work 3.5 feature on Windows Server 2012 R2 before you install ADK 8.1