Add a test for config files to nginx role
Add a test for config files to nginx role

This will made bad configs get displayed instead of hidden in a log file

stvstnfrd/configuration,mitodl/configuration,mitodl/configuration,arbrandes/edx-configuration,mitodl/configuration,arbrandes/edx-configuration,stvstnfrd/configuration,appsembler/configuration,stvstnfrd/configuration,EDUlib/configuration,stvstnfrd/configuration,edx/configuration,EDUlib/configuration,edx/configuration,appsembler/configuration,stvstnfrd/configuration,arbrandes/edx-configuration,appsembler/configuration,edx/configuration,mitodl/configuration,EDUlib/configuration,appsembler/configuration,edx/configuration,EDUlib/configuration,arbrandes/edx-configuration,arbrandes/edx-configuration,EDUlib/configuration