Cleanup plugins directories and references

Having callback_plugins, and action plugins in random locations causes
a lot of disparity.

We should centralize this into one place in the plugins directory and
fix up the ansible.cfg to reflect this.

Additionally, since the ansible.cfg already reflects action_plugins, we
don't need a link to action_plugins in the base of the repository.

action_plugins

@@ -1 +0,0 @@
-plugins/actions

ansible.cfg

@@ -4,6 +4,7 @@
 [defaults]
 ansible_managed = Please do not change this file directly since it is managed by Ansible and will be overwritten
 action_plugins = plugins/actions
+callback_plugins = plugins/callback
 roles_path = ./roles
 # Be sure the user running Ansible has permissions on the logfile
 log_path = /var/log/ansible.log

infrastructure-playbooks/ansible.cfg

@@ -1,4 +1,5 @@
 [defaults]
 ansible_managed = Please do not change this file directly since it is managed by Ansible and will be overwritten
 action_plugins = ../plugins/actions
+callback_plugins = ../plugins/callback
 roles_path = ../roles

tox.ini

@@ -124,6 +124,7 @@ setenv=
   ANSIBLE_SSH_ARGS = -F {changedir}/vagrant_ssh_config
   ANSIBLE_CONFIG = -F {toxinidir}/ansible.cfg
   ANSIBLE_ACTION_PLUGINS = {toxinidir}/plugins/actions
+  ANSIBLE_CALLBACK_PLUGINS = {toxinidir}/plugins/callback
   ANSIBLE_CALLBACK_WHITELIST = profile_tasks
   # only available for ansible >= 2.2
   ANSIBLE_STDOUT_CALLBACK = debug