gitlab-ci: update metadata_v0 test for parsing change
gitlab-ci: update metadata_v0 test for parsing change

`Builds:` is directly in the .yml metadata, and the internal representation
now uses the same "Builds" name.  Reading in .txt metadata files used the
name "builds" for that.  So this test now uses "Builds" as canonical.

fdroidtravis/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,fdroidtravis/fdroidserver,f-droid/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,f-droid/fdroid-server,fdroidtravis/fdroidserver