Use etree's API to set attribute
Use etree's API to set attribute

ford-prefect/cerbero,fluendo/cerbero,ford-prefect/cerbero,flexVDI/cerbero,ikonst/cerbero,superdump/cerbero,justinjoy/cerbero,fluendo/cerbero,flexVDI/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,EricssonResearch/cerbero,ford-prefect/cerbero,BigBrother-International/gst-cerbero,flexVDI/cerbero,BigBrother-International/gst-cerbero,atsushieno/cerbero,EricssonResearch/cerbero,cee1/cerbero-mac,ramaxlo/cerbero,multipath-rtp/cerbero,BigBrother-International/gst-cerbero,ramaxlo/cerbero,ylatuya/cerbero,sdroege/cerbero,brion/cerbero,jackjansen/cerbero-2013,cee1/cerbero-mac,shoreflyer/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,shoreflyer/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,nirbheek/cerbero-old,nirbheek/cerbero,centricular/cerbero,davibe/cerbero,justinjoy/cerbero,ramaxlo/cerbero,jackjansen/cerbero-2013,lubosz/cerbero,AlertMe/cerbero,ikonst/cerbero,jackjansen/cerbero-2013,brion/cerbero,multipath-rtp/cerbero,AlertMe/cerbero,ylatuya/cerbero,centricular/cerbero,BigBrother-International/gst-cerbero,jackjansen/cerbero,atsushieno/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,nzjrs/cerbero,atsushieno/cerbero,fluendo/cerbero,GStreamer/cerbero,ramaxlo/cerbero,nicolewu/cerbero,fluendo/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,superdump/cerbero,GStreamer/cerbero,flexVDI/cerbero,ikonst/cerbero,davibe/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,ikonst/cerbero,davibe/cerbero,GStreamer/cerbero,GStreamer/cerbero,centricular/cerbero,OptoFidelity/cerbero,lubosz/cerbero,nicolewu/cerbero,nirbheek/cerbero-old,superdump/cerbero,jackjansen/cerbero,shoreflyer/cerbero,fluendo/cerbero,nirbheek/cerbero-old,cee1/cerbero-mac,davibe/cerbero,sdroege/cerbero,lubosz/cerbero,OptoFidelity/cerbero,nzjrs/cerbero,OptoFidelity/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,brion/cerbero,superdump/cerbero,ford-prefect/cerbero,multipath-rtp/cerbero,multipath-rtp/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,EricssonResearch/cerbero,brion/cerbero,sdroege/cerbero,AlertMe/cerbero,nirbheek/cerbero-old,lubosz/cerbero,nirbheek/cerbero,EricssonResearch/cerbero,ramaxlo/cerbero,brion/cerbero,centricular/cerbero,sdroege/cerbero,atsushieno/cerbero,centricular/cerbero,freedesktop-unofficial-mirror/gstreamer__cerbero,jackjansen/cerbero,flexVDI/cerbero,jackjansen/cerbero-2013,shoreflyer/cerbero,freedesktop-unofficial-mirror/gstreamer__sdk__cerbero,shoreflyer/cerbero,nzjrs/cerbero,nicolewu/cerbero,jackjansen/cerbero,EricssonResearch/cerbero,justinjoy/cerbero,nzjrs/cerbero,AlertMe/cerbero,atsushieno/cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,ylatuya/cerbero,jackjansen/cerbero-2013,cee1/cerbero-mac,ikonst/cerbero,nirbheek/cerbero,nzjrs/cerbero,OptoFidelity/cerbero,nirbheek/cerbero,justinjoy/cerbero,ylatuya/cerbero,sdroege/cerbero,GStreamer/cerbero,BigBrother-International/gst-cerbero,AlertMe/cerbero