QA:Testcase Anaconda updates.img via installation source

Description

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

How to test

1. Prepare a valid updates.img file. A suggested approach is to create a dummy updates.img with an empty file:

   mkdir /tmp/updates
   dd if=/dev/zero of=updates.img bs=1k count=1440
   mke2fs updates.img
   mount -o loop updates.img /tmp/updates
   touch /tmp/updates/TESTING123
   umount /tmp/updates
   

2. Copy the updates.img into the images/ directory of the remote installation source you are installing from
3. Boot the installer while specifying the installation source where the updates.img was published.
4. Proceed with installation

Expected Results

1. Anaconda prepares the updates.img and copies its content to /tmp/updates/
2. Anaconda proceeds without error