Bug970187, Bug970187, CDMA-3way calls

It correspondence of reviews.
https://github.com/mozilla-b2g/gaia/pull/19976

https://bugzilla.mozilla.org/show_bug.cgi?id=970187
You can rewrite this as:
```javascript
['evdoa', 'evdo0', 'etc.'].forEach(function(type) {
  MockNavigatorMozMobileConnections[0].voice = { type: type }
  assert.isTrue(CallsHandler.isFirstCallOnCdmaNetwork());
});