internal/licenses: add to list of non-OSI licenses
internal/licenses: add to list of non-OSI licenses

Added two CC licenses that I forgot to add the first time.

Change-Id: Idf61a20e3929663a0dccb0455b5533e8edff6137
Reviewed-on: https://team-review.git.corp.google.com/c/golang/discovery/+/696208
Reviewed-by: Julie Qiu <e6cb64861edcc38971590ff27c111e0e672de045@google.com>

golang/pkgsite,golang/pkgsite,golang/pkgsite,golang/pkgsite