Merge pull request #5826 from UtahDave/develop

Remove hyperlink until new link is found
Fix folder name for external pillars in docs
Fix use of msg before assignment
Correct behaviour of when using list with cross-env file path
Update ext_pillar location in manpage
Merge pull request #5828 from elbaschid/fix/docs_for_external_pillar

Fix folder name for external pillars in docs
Documentation fix

This fixes #5827 by specifying the proper name for the software package
which provides add-apt-repository. It may have at one point been called
software-properties-common, but Ubuntu's package search page has
packages going back to 10.04 LTS showing add-apt-repository in the
python-software-properties package.
Merge pull request #5829 from terminalmage/docs

Documentation fix
Further clarification on add-apt-repository

The change made in 1e831ad was not entirely accurate. This commit gives
more detail, providing a better explanation.
Merge pull request #5830 from terminalmage/docs

Further clarification on add-apt-repository
Add ip6 grain
Merge pull request #5831 from jcassee/develop

Add ip6 grain
Add fqdn_ip4 and fqdn_ip6 grains
Salt's git state and git module now honors the identity file for
`git submodule`
Merge pull request #5834 from czee/develop

Salt's git state and git module now honors the identity file for `git submodule`
pillar: docs for include
pillar: docs for include (tweak)
qemu_nbd: use cfdisk if available, per recommendation in fdisk man;
make compatible with Ubuntu
Fix fqdn_ip4 and fqdn_ip6 to list all addresses
Update fqdn_ip4 / fqdn_ip6 docstrings