(maint) Merge up 13cd0e7 to 6.3.x
(maint) Merge up 13cd0e7 to 6.3.x

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* commit '13cd0e71dfcc2db2c25d5b69a745edbb4fcd2b87':
  Update restarting.markdown
  (maint) Fix Debian Stretch version
  Update restarting.markdown
  Update restarting.markdown
  (DOC-4397) Add step on how to reload PE

puppetlabs/puppetserver,puppetlabs/puppet-server,puppetlabs/puppetserver,puppetlabs/puppet-server,puppetlabs/puppetserver,puppetlabs/puppet-server,puppetlabs/puppetserver