Merge pull request StackStorm#261 from amanda11/master

Ansible-playbooks to install on Centos8

Merge pull request StackStorm#222 from theatro/upgrade_nodejs

Use yum_repository for nodesource repo install

Merge pull request StackStorm#252 from surfer190/master

Install st2 pack in smoketests anyway

Merge pull request StackStorm#250 from punkrokk/master

Support Pack Install as a variable in stackstorm.st2 (py2)

Merge pull request StackStorm#243 from StackStorm/fix/2.8.0-compat

Fix compatibility with new Ansible 2.8.0

Merge pull request StackStorm#240 from StackStorm/revert-239-patch-3

Move proxy settings for Chatops to respective `StackStorm.st2chatops` role

Merge pull request StackStorm#173 from cognifloyd/namespace_roles

Prefix roles with StackStorm galaxy org
Closes StackStorm#228

Merge pull request StackStorm#227 from StackStorm/LH/facts_namespace

Ansible_facts namespacing

Merge pull request StackStorm#225 from StackStorm/enh/galaxy-category

Add Ansible Galaxy 'system' tag

Merge pull request StackStorm#219 from StackStorm/update-stable-repo-…

…keys

Update stable repo keys