(PUP-2745) Skip dependencies with malformed dependencies.

Prior to this commit if we encountered a dependent candidate module with a
malformed dependency, we would just ignore the malformed dependency.
This commit changes that behavior to ignore the entire dependent candidate as
an invalid module, this preventing the installation of a module with unknown
dependencies.
(PUP-2817) Fix zone properties so that nil is not passed through

Before this patch, when `insync?` was called on the zone properties ip,
dataset and inherit with value nil (happens the first time when the properties
are not present), `true` was returned, which resulted in them not being set
until the values were actually queried, which happened after the installation
of zone. Unfortunately, the inherit property can only be set before
installation.

This patch removes the spurious check for `nil`, which always returned `true`,
and instead handles it similar to when `:absent` is used.
(PUP-406) Deprecate stringify_ facts option

The `stringify_facts` option is going to be removed in Puppet 4.0 and we
need to let users know about deprecated features.

This commit adds in a deprecation message in the stringify_facts
description.
(PUP-586) Deprecate Instrumentation System

The instrumentation system is being removed in Puppet 4.0.

This commit is for adding a deprecation message on the subcommands for
users to migrate off of it before it is finally deleted.
Merge pull request #3000 from demophoon/deprecation/master/deprecate-stringify-fact-default

(PUP-406) Deprecate stringify_ facts option
Merge pull request #2998 from demophoon/deprecation/master/deprecate-instrumentation-system

(PUP-586) Deprecate Instrumentation System
Merge pull request #2973 from vrthra/fix/pup-2817/zones

(PUP-2817) Fix zone properties so that nil is not passed through
Merge pull request #2980 from highb/fix/master/pup-2745_skip_module

(PUP-2745) Skip dependencies with malformed dependencies.
(PUP-2040) .pmtignore and .gitignore for build

Prior to this commit there was no way for a module developer to specify files
that they want to ignore when building/packaging their module.

This commit adds the ability to specify files to ignore in a .pmtignore file,
located in the project root and using the same syntax as .gitignore, or if that
is not present, reading the .gitignore file and using that.

This commit also adds pathspec as a vendored gem. (PE-5574)
(PUP-796) Deprecate CouchDB facts terminus (docs only)
(PUP-2040) .pmtignore spec tests

Adding spec tests to cover build when .pmtignore/.gitignore files are present/absent
(PUP-2040) Update vendoring instructions

Making the vendoring instructions more clear, detailing the PUPPET_README.md
suggestion.
(docs) Add note about install_options to pacman provider
(docs) Document special  value for yumrepo's proxy attribute
Merge pull request #2946 from highb/pup-2040-pmtignore

PUP-2040 Add .pmtignore functionality
(PUP-2914) Remove remaining rgen dependencies

In 6a94700, the rgen 0.7.0 library was added to the vendor directory in puppet,
and as such is no longer an external dependency. This commit removes the rgen
package as a dependency of the puppet rpm and deb packages, so that it is not
installed in addition to the vendored rgen (or worse even installed at a
conflicting version).

Signed-off-by: Moses Mendoza <moses@puppetlabs.com>
(docs) Clarify description and error message for http_proxy_password setting

"URL-compliant" was an odd way to put this, so I revised the text to be less ambiguous.
(docs) Clarify that the file type's mode attribute expects a string, not a number

Also, link to the puppetlabs/acl module.
(PUP-3129) Do not store _timestamp fact in immutable hash

The _timestamp fact causes problems when turning on immutable facts
because it is an unsupported data type (Time) that should not leak into
the puppet language. (The system halts with an error if you try prior to
this fix.)
Merge pull request #3010 from kylog/issue/pup-3129/delete-_timestamp-from-immutable-facts-hash

(PUP-3129) Do not store _timestamp fact in immutable hash