[main] Resolve missing comment on tboot (#2396)

* save changes to kernel and tboot

* save change

* update kernel signature files

* fix manifests

* fix grub2-efi-binary-signed

* update changelog

* fix licesing

* address remaining comments

Co-authored-by: Henry Li <lihl@microsoft.com>

SPECS/tboot/tboot.spec

@@ -38,7 +38,8 @@ mkdir -p %{buildroot}%{_docdir}
 install -m 755 %{SOURCE2} %{buildroot}%{_docdir}/README.md
 
 %files
-%doc COPYING docs/*
+%license COPYING
+%doc docs/*
 %config %{_sysconfdir}/grub.d/20_linux_tboot
 %config %{_sysconfdir}/grub.d/20_linux_xen_tboot
 %{_bindir}/create-drtm-policy.sh