Merge pull request #523 from pulp/mhrivnak-1097816

1097816 - adding "gpgkey" as a valid distributor config value
Add description for the step that moves iso files to final location during an export.
Merge branch 'pulp-2.4'
Automatic commit of package [pulp-rpm] release [2.4.0-0.24.beta].
Merge (-s ours) pulp-2.4 => master, post-build
Merge pull request #524 from pulp/barnabycourt-add-iso-publish-description

Add description for the step that moves iso files to final location duri...
1116060 - Fix handling of failed package installs.
CLI command fixed.
Fix package group CLI.
Fix progress reporting for groups.
Merge pull request #526 from pulp/jortel-1116060_2

1116060 - Fix handling of failed package installs
Merge branch 'pulp-2.4'