[periscope] Fix for variant HLS streams
[periscope] Fix for variant HLS streams

They use normal and variant playlists now.

back-to/streamlink,streamlink/streamlink,beardypig/streamlink,gravyboat/streamlink,melmorabity/streamlink,bastimeyer/streamlink,javiercantero/streamlink,wlerin/streamlink,melmorabity/streamlink,wlerin/streamlink,back-to/streamlink,gravyboat/streamlink,beardypig/streamlink,chhe/streamlink,chhe/streamlink,bastimeyer/streamlink,streamlink/streamlink,javiercantero/streamlink