Merge branch 'hotfix/#6575-redis-setitems-last-item-overwritten-fixes-#6324'

Close #6575
Close #6324
added missing register service at Zend\Paginator\AdapterPluginManager
patch ternary operator with isset and add test case for factory additions
#6577 - removing redundant docblocks
Merge branch 'hotfix/#6577-adding-missing-paginator-adapter-plugin-manager-registered-services' into develop

Close #6577
Forward port #6577