Documentation for FOG_CREDENTIAL usage

A customer asked how to use multiple sets of credentials with the cloud
provisioner. This technically has more to do with the fog gem than the
cloud provsioner itself - but is important for using the cloud
provisioner with multiple sets of infrastructure, regardless.
(DOC-685) deleting q_pe_check_for_updates from console answers, is master only
Add pages on regenerating all certificates: PE 3.2, PE 2.8, Puppet 3.5
Cert regen: autosign was enabled in split 2.8, fix version numbers, fix canonical links
Add mcollective to foss cert regen guide, fix links
Fix two broken links in two versions
Copyedits and adding pointer to blog post on CVE-2014-0160
Edits and minor revisions
Merge branch 'master' of github.com:puppetlabs/puppet-docs
(DOC-687) changing service pe-httpd restart to init.d script, service may not be available on all platforms
Added Razor links to main page
Merge branch 'master' of github.com:puppetlabs/puppet-docs
Fixed a format/repetition error.
Corrections and revisions to FOSS Puppet cert regen guide.
Corrections and revisions to PE monolithic cert regen guides for 3.2 and 2.8
Corrections and revisions to PE split install cert regen guide for 3.2 and 2.8.
Edits and revisions to QSG II unix track
Merge branch 'master' of github.com:puppetlabs/puppet-docs
Removed un-necessary warning re: cert retrieval.
Merge pull request #303 from zacharyalexstern/fix_fog_docs

Documentation for `FOG_CREDENTIAL` usage