Comment 4 for bug 1748033

OK, preflight checks for the dependency additions:

- our units do have trusty-updates enabled.

python3-debian is already the newest version.
python3-xdg is already the newest version.
binutils is already the newest version.
binutils set to manually installed.
python3-apt is already the newest version.
python3-lxml is already the newest version.
python3-magic is already the newest version.
python3-yaml is already the newest version.
squashfs-tools is already the newest version.
The following extra packages will be installed:
  libelfg0 libfakeroot
The following NEW packages will be installed:
  execstack fakeroot jq libelfg0 libfakeroot python3-all python3-simplejson
0 upgraded, 7 newly installed, 0 to remove and 3 not upgraded.
Need to get 335 kB of archives.
After this operation, 1,369 kB of additional disk space will be used.

So it looks quite painless. I'll need adding those to dependencies.txt. I've already checked that our units have trusty-updates enabled and do a full upgrade during deployment.