docs: generate_packages_doc.py: guard against no pipeline info (#188)

The docs generation script fails if there's no pipeline info, which is
the case now for our GitHub builds since they don't provide a pipeline
ID on GitLab to reference. Guard against this so that it doesn't cause
build failures, but leave the logic there in case we ever need to
re-deploy the new version of this script on GitLab infrastructure.

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>

Author: threexc

docs/packages/generate_packages_doc.py

@@ -80,7 +80,9 @@ def get_upstream_tag(package_name, version, package_list):
         (
             pkg["pipeline"]["ref"]
             for pkg in package_list
-            if pkg["name"] == package_name and pkg["version"].startswith(version)
+            if pkg["name"] == package_name
+            and pkg["version"].startswith(version)
+            and "pipeline" in pkg
         ),
         None,
     )