Added an additional JWT issuer to the credentials service
Added an additional JWT issuer to the credentials service

This restores backward-compatibility with the current method of token issuance betwen LMS and the Credentials Service.

ECOM-6938

rue89-tech/configuration,hks-epod/configuration,edx/configuration,mitodl/configuration,stvstnfrd/configuration,open-craft/configuration,gsehub/configuration,arbrandes/edx-configuration,arbrandes/edx-configuration,proversity-org/configuration,rue89-tech/configuration,jorgeomarmh/configuration,arbrandes/edx-configuration,edx/configuration,stvstnfrd/configuration,arbrandes/edx-configuration,armaan/edx-configuration,michaelsteiner19/open-edx-configuration,Stanford-Online/configuration,rue89-tech/configuration,mitodl/configuration,jorgeomarmh/configuration,EDUlib/configuration,arbrandes/edx-configuration,hastexo/edx-configuration,proversity-org/configuration,EDUlib/configuration,EDUlib/configuration,hastexo/edx-configuration,edx/configuration,appsembler/configuration,hks-epod/configuration,gsehub/configuration,open-craft/configuration,armaan/edx-configuration,EDUlib/configuration,proversity-org/configuration,EDUlib/configuration,Stanford-Online/configuration,open-craft/configuration,michaelsteiner19/open-edx-configuration,edx/configuration,michaelsteiner19/open-edx-configuration,rue89-tech/configuration,michaelsteiner19/open-edx-configuration,proversity-org/configuration,Stanford-Online/configuration,Stanford-Online/configuration,armaan/edx-configuration,gsehub/configuration,gsehub/configuration,gsehub/configuration,appsembler/configuration,stvstnfrd/configuration,hks-epod/configuration,mitodl/configuration,hks-epod/configuration,hastexo/edx-configuration,mitodl/configuration,jorgeomarmh/configuration,Stanford-Online/configuration,armaan/edx-configuration,rue89-tech/configuration,stvstnfrd/configuration,hastexo/edx-configuration,hks-epod/configuration,hastexo/edx-configuration,proversity-org/configuration,appsembler/configuration,jorgeomarmh/configuration,open-craft/configuration,stvstnfrd/configuration,appsembler/configuration