pkotov87 - change System.Environment]::SetEnvironmentVariable() to Set-ItemProperty

Author: pkotov87

spec/unit/puppet/provider/dsc_base_provider/dsc_base_provider_spec.rb

@@ -1529,7 +1529,6 @@
       end
 
       it 'updates the system PSModulePath to $MungedPSModulePath' do
-        -Name 'PSModulePath' -Value $MungedPSModulePath
         expect(result).to match(/-Name 'PSModulePath' -Value \$MungedPSModulePath/)
       end