Add list of logout URIs for other svcs upon LMS logout.
Add list of logout URIs for other svcs upon LMS logout.

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