Remove acceptance/basic_spec

This removes the legacy "basic_spec" that was used as an introduction to
module testing.  It assumes the FOSS path for the module dir.  Since the
default module dir changes in PE depending on whether or not the module
is distributed with PE or not, these basic specs have been removed from
other modules.
Merge pull request #312 from justinstoller/maint/1.0.x/remove_basic_spec

Remove acceptance/basic_spec
Fix various differences for rhel5

iptables 1.3.5 ships on rhel 5 and is really old. It doesn't support
`--comment` on ip6tables, doesn't support `-m socket` or `--random`, and
the format of netmasks uses subnet mask format instead of CIDR.