plugins.ustreamtv: Update to use new HTTP APIs.
plugins.ustreamtv: Update to use new HTTP APIs.

mmetak/streamlink,chhe/streamlink,Saturn/livestreamer,flijloku/livestreamer,wolftankk/livestreamer,chrippa/livestreamer,streamlink/streamlink,jtsymon/livestreamer,Klaudit/livestreamer,hmit/livestreamer,programming086/livestreamer,back-to/streamlink,bastimeyer/streamlink,intact/livestreamer,programming086/livestreamer,okaywit/livestreamer,derrod/livestreamer,charmander/livestreamer,derrod/livestreamer,beardypig/streamlink,ethanhlc/streamlink,Dobatymo/livestreamer,gtmanfred/livestreamer,charmander/livestreamer,chhe/livestreamer,fishscene/streamlink,Masaz-/livestreamer,beardypig/streamlink,gravyboat/streamlink,wlerin/streamlink,caorong/livestreamer,flijloku/livestreamer,chrippa/livestreamer,intact/livestreamer,Masaz-/livestreamer,lyhiving/livestreamer,fishscene/streamlink,chhe/streamlink,sbstp/streamlink,sbstp/streamlink,Feverqwe/livestreamer,melmorabity/streamlink,wlerin/streamlink,chhe/livestreamer,caorong/livestreamer,jtsymon/livestreamer,lyhiving/livestreamer,gtmanfred/livestreamer,melmorabity/streamlink,mmetak/streamlink,hmit/livestreamer,wolftankk/livestreamer,bastimeyer/streamlink,gravyboat/streamlink,okaywit/livestreamer,ethanhlc/streamlink,blxd/livestreamer,Klaudit/livestreamer,blxd/livestreamer,streamlink/streamlink,Saturn/livestreamer,Dobatymo/livestreamer,javiercantero/streamlink,javiercantero/streamlink,Feverqwe/livestreamer,back-to/streamlink