/usr/lib/python3/dist-packages/os_vif-1.2.1.egg-info/top_level.txt is in python3-os-vif 1.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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os_vif vif_plug_linux_bridge vif_plug_ovs