Maint: Be more clear that puppet queue is deprecated

- Remove link to old wiki docs
- Link to PuppetDB docs
- Say "deprecated" again
Maint: Move pkgdmg documentation into provider description; document changed behavior

This wiki page was more longwinded than it needed to be; you can really sum it
up in about four bullet points. So I did that, and removed the wiki link.

Also, while investigating what the wiki said, it became clear that this provider
no longer actually uses open-uri: a Kernel.open call was changed to File.open,
but apparently nobody was using file:/// URLs (or anything weirder), so it went
unnoticed. So I added some comments for future maintainers of this code.
Maint: Remove remaining links to wiki pages in Puppet source

These pages now all have better-maintained counterparts in the main docs site.
(#16570) Don't load the node object again in configurer

Avoid loading the node object again if we already have a catalog.
Bug 1051 (platforms mistook for versions)

Fix bug PUP-1051 by stripping out the extraneous platform info from the individual versions of the gems.
(maint) cron: Make the munge method for the command property more readable

The removal of leading and trailing spaces in cron commands was
performed using a perlism instead of just using String#strip.
Do that instead.
(PUP-1051) Add rspec test to verify fix
(PUP-1350) keep original stacktrace when error happens parsing inline template

Helps with debugging errors in template
Merge pull request #2215 from carlossg/template-stacktrace

(PUP-1350) keep original stacktrace when error happens parsing inline template
Merge pull request #2196 from ffrank/maint/cron-command-munge

(maint) cron: Make the munge method for the command property more readable
Merge pull request #2186 from pedrocr/master

Fix Bug PUP-1051 (platforms mistook for versions)
Merge pull request #2142 from nfagerlund/docs_wiki_links

Docs wiki links (kill 'em)
Merge branch 'pr/2162'

* pr/2162:
  (#16570) Don't load the node object again in configurer

Conflicts:
	lib/puppet/configurer.rb

Closes GH-2162
Merge branch 'master' of https://github.com/puppetlabs/puppet