QA:Testcase Anaconda updates.img via URL

Associated release criterion
This test case is associated with the Basic_Release_Criteria#update-image release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion. If so, please file a bug and nominate it as blocking the appropriate milestone, using the blocker bug nomination page.

Description

This test will verify that anaconda can download the requested updates.img file using a HTTP url. For help preparing an updates.img, refer to Anaconda/Updates

How to test

1. Prepare a valid updates.img file and copy it to a httpd server accessible by your installation. See this page for image creation instructions. A good thing to change in the updates.img is the "What language would you like to use during the installation process?" text in pyanaconda/ui/gui/spokes/welcome.glade, as this text is displayed on one of the first screens.
2. Boot the installer while specifying the http URL for the updates image. For example:

   inst.updates=http://pschindl.fedorapeople.org/updates.img

3. Proceed with installation

Expected Results

1. Anaconda prepares the updates.img and copies its content to /tmp/updates. Any changes you included in the updates.img file are applied (If you use updates.img from the example there should be changed text on the first screen: "If you can see ...")
2. Anaconda proceeds without related errors