fixes #2551 new host image not always visible under openstack
(cherry picked from commit 511e8f789155d6e5914bbdb5c1810aca70572d15)

fixes #2325 No A record created in domain when provisioning image based vm
(cherry picked from commit 3b6d152746d63444ce0ae2044cec4cbb8f224882)

fixes #2553 let setting admin attribute on user creation
(cherry picked from commit 7fab6ba6c7e6085bee5149953aa52a59d83e62f4)

fixes #2550 Puppetclass search_by_host doesn't return all classes for an unknown host

Tests for puppetclass API searches on nonexistent hosts

Puppetclass search_by_host does not fail if Host does not belong to any Hostgroup

Puppetclass search_by_host query looks for distinct puppetclasses instead of pruning them afterwards...

Fixes #2372 - Strip non-digit characters from non-numeric OS versions
(cherry picked from commit fe838fad64723c17a4f69d37355927214cba4592)

fixes #2537 - audit details on deleted host fail
(cherry picked from commit 23db9bad8b8595c7bb88cd016983fd0945ec79ae)

fixes #2546 - audit details error - undefined method 'map' for string
(cherry picked from commit ff9597b46bc8aa7f93ac25a942a2b109afee8d7e)

Fixes #2502 - session expiration updates

Signo now allows to transparently prolong user session which got
expired. Also when you now logout from Foreman you will end up in Signo
login form. This brings some code clean up and test changes and small
SSO method API change....

fixes #2509, fixes #2507: few issues around Host::Base#merge_facts and fact names
(cherry picked from commit 136f8dfcb3bbe9a816a265efe619ede33cad0a94)

fixes #2498 FactNames are not precreated

Witlessbird's fix to reduce database lookups and do Ruby hash lookups instead
(cherry picked from commit 991cd8ae19d87fc76adf97e18297bb593721e546)