The Alexa voiceagent requires a newer version of curl with nghttp2 support enabled.  On my original investigation when integrating meta-aac and adding the alexa-voiceagent-service recipe I mistakenly thought the version of curl in thud would be new enough since it has nghttp2 support, but it turns out it is not based on testing at the Berlin F2F.  A test build with the curl recipe in meta-aac-builder failed when I tried integrating it, and it upon testing, it seems that it would be better if enabling agl-voiceagent-service did not over-ride the curl version and build configuration, as it triggers significant rebuilding.