Fix qualityLevels integration where a player is created from a video

with a source.

Defer setQualityLevels_ until tech is ready.

src/videojs-contrib-hls.js

@@ -547,7 +547,7 @@ class HlsHandler extends Component {
       this.ignoreNextSeekingEvent_ = true;
     });
 
-    this.setupQualityLevels_();
+    this.tech_.ready(this.setupQualityLevels_.bind(this));
 
     // do nothing if the tech has been disposed already
     // this can occur if someone sets the src in player.ready(), for instance

test/videojs-contrib-hls.test.js

@@ -2350,6 +2350,7 @@ QUnit.test('populates quality levels list when available', function(assert) {
     src: 'manifest/master.m3u8',
     type: 'application/vnd.apple.mpegurl'
   });
+  openMediaSource(this.player, this.clock);
 
   assert.ok(this.player.tech_.hls.qualityLevels_, 'added quality levels');
 
@@ -2379,6 +2380,7 @@ QUnit.test('populates quality levels list when available', function(assert) {
     src: 'http://example.com/media.m3u8',
     type: 'application/vnd.apple.mpegurl'
   });
+  openMediaSource(this.player, this.clock);
 
   assert.ok(this.player.tech_.hls.qualityLevels_, 'added quality levels from video with source');
 });