(#8272) Add missing tests for Windows service provider methods.
Added missing spec tests for Windows service provider methods:
:stop, :enable, :disable, and :manual_start
Refactored to match Nick's previous work.
Reviewed By: Nick Lewis [nick@puppetlabs.com]
(cherry picked from commit d08ae7fd2180c95d1fcafa149128d25cc4680c6c)