[Merge] lp:~zulcss/nova/openwrt-copyright into lp:~openstack-ubuntu-packagers/nova/ubuntu

[Vish Ishaya]

yes, they are only used for the image upload tests, and since the images are not run afterwards, we can replace them with random binary data.
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https://code.launchpad.net/~zulcss/nova/openwrt-copyright/+merge/69273
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