Added targets file to work around VSTS SDL FxCop issue
Added targets file to work around VSTS SDL FxCop issue

AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/azure-activedirectory-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet,AzureAD/microsoft-authentication-library-for-dotnet