Richaudience Bid Adapter : add gvlid to alias (prebid#12330)

* add gvlid to alias

Prebid.js doesn't use the `spec.gvlid` for aliases as it seems. In order to avoid `gvlMapping` definitions, the shorter alias also gets a gvlid

* Fix alias test

* Use deep equal

modules/richaudienceBidAdapter.js

@@ -11,7 +11,7 @@ let REFERER = '';
 export const spec = {
   code: BIDDER_CODE,
   gvlid: 108,
-  aliases: ['ra'],
+  aliases: [{code: 'ra', gvlid: 108}],
   supportedMediaTypes: [BANNER, VIDEO],
 
   /***

test/spec/modules/richaudienceBidAdapter_spec.js

@@ -796,7 +796,7 @@ describe('Richaudience adapter tests', function () {
 
   it('Verifies bidder aliases', function () {
     expect(spec.aliases).to.have.lengthOf(1);
-    expect(spec.aliases[0]).to.equal('ra');
+    expect(spec.aliases[0]).to.deep.equal({code: 'ra', gvlid: 108});
   });
 
   it('Verifies bidder gvlid', function () {