Added a fix for packaging to make it work on Debian as well

Ubuntu dh_python3 added a strange tilda in 3.2 version dependencies,
making installations on Debian break since those have 3.2.x pattern.
Merge pull request #9 from endlessm/eos-shell/2654_debian

AppUpdater: Added a fix for xdelta3 packaging to make it work on Debian as well