Broaden test app support for init data overrides.
Broaden test app support for init data overrides.

Init data overrides will now be honored by the test app for all but
YT clearkey content.

Change-Id: Ie1cb0209e7b374812e6023fdaabe0f452f8dc424

Afrostream/shaka-player,intfrr/shaka-player,ustudio/shaka-player,intfrr/shaka-player,op1ekun/shaka-player,russitto/shaka-player,blinkbox/shaka-player,blinkbox/shaka-player,cmgrecu/shaka-player,TobbeEdgeware/shaka-player,Ross-cz/shaka-player,blinkbox/shaka-player,Afrostream/shaka-player,vpopolitov/shaka-player,tvoli/shaka-player,treejames/shaka-player,indiereign/shaka-player,UIKit0/shaka-player,sanbornhnewyyz/shaka-player,ustudio/shaka-player,TheModMaker/shaka-player,sanbornhnewyyz/shaka-player,cmgrecu/shaka-player,russitto/shaka-player,Ross-cz/shaka-player,palmerj3/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,UIKit0/shaka-player,vimond/shaka-player,viniciusferreira/shaka-player,vimond/shaka-player,shaka-project/shaka-player,op1ekun/shaka-player,samdutton/shaka-player,rodrigoramos/shaka-player,baconz/shaka-player,cmgrecu/shaka-player,viniciusferreira/shaka-player,samdutton/shaka-player,indiereign/shaka-player,priyajeet/shaka-player,palmerj3/shaka-player,priyajeet/shaka-player,viniciusferreira/shaka-player,shaka-project/shaka-player,priyajeet/shaka-player,treejames/shaka-player,vpopolitov/shaka-player,samdutton/shaka-player,ustudio/shaka-player,vpopolitov/shaka-player,Afrostream/shaka-player,Afrostream/shaka-player,samdutton/shaka-player,TheModMaker/shaka-player,indiereign/shaka-player,brightcove/shaka-player,treejames/shaka-player,viniciusferreira/shaka-player,shaka-project/shaka-player,brightcove/shaka-player,Ross-cz/shaka-player,op1ekun/shaka-player,brightcove/shaka-player,UIKit0/shaka-player,treejames/shaka-player,palmerj3/shaka-player,UIKit0/shaka-player,vimond/shaka-player,sanbornhnewyyz/shaka-player,TheModMaker/shaka-player,tvoli/shaka-player,sanbornhnewyyz/shaka-player,TobbeEdgeware/shaka-player,TheModMaker/shaka-player,baconz/shaka-player,rodrigoramos/shaka-player,ustudio/shaka-player,intfrr/shaka-player,baconz/shaka-player,rodrigoramos/shaka-player,TobbeEdgeware/shaka-player,vpopolitov/shaka-player,tvoli/shaka-player,op1ekun/shaka-player,priyajeet/shaka-player,palmerj3/shaka-player,blinkbox/shaka-player,rodrigoramos/shaka-player,intfrr/shaka-player,russitto/shaka-player