Debian Package Architechture

Debian packages are allowed to designate the package as
architecture-independent by specifying the value 'all' in the
Architecture field of debian/control. Update
salt.modules.apt.install (via
salt.modules.pkg_resource._parse_pkg_meta) to respect this and not
require ':all' appended to a package name in order to install it on a
64bit machine.
Merge pull request #6587 from 198d/develop

Debian Package Architechture