Use salt's master `clean_proc` routine.

On Fedora 20, we hit an issue, at least, similar to #3618.
While debugging it, I've found that the runtests process keeps eating
memory.

Using `clean_proc` has at least, allowed the runtests to finish without
triggering #3618.
Fix #12137 where minions fail to perform a highstate when starting even when instructed
Pass through arguments in lvs.zero

Fixes #9001.
Avoid traceback for unexpected pkgin/pkg_info output
Fixes in the debian_ip module to allow the network.system method to work as expected on Debian based systems.  Gateway in that section is still ignored and should be put in the interface definition.
Remove binary package verification

This code has been the source of several nagging issues over the last
several releases. It is also unnecessary, since a package installed
using the "sources" argument will still fail if the package's real name
doesn't match the desired name, since the list_pkgs output will show the
true name of the installed package (which will not match what was
specified).

I'm sorry I ever wrote this code, and I'm glad to be rid of it.

Conflicts:
	salt/modules/pkg_resource.py
Remove references to now-nonexistant function
remove unused imports