Also modified dib-run-parts to apply a more workable solution for
filtering out unwanted files such as editor backups and VCS.
The script is installed in its own element, depended on by the OS
specific ubuntu element. This is because the ubuntu element (and
later other OS's) are responsible for populating the root filesystem.
If we try to install this in base, the root filesystem will look to
be populated already and we will skip automatically choosing ubuntu.
Change-Id: I017646748c1a8360299106289b57d976d45875a8
This includes the install-packages implementation for dpkg, apt http proxy
config, daemon blocking and unblocking.
Change-Id: I8f159021d2b223d7003cec067de3aa605ad06974
