Add some in-tree ansible group vars

As we're using these roles, we'll want to pass potentially different
values to different of our hosts over time. For instance, we may want to
set the jenkins servers to start using puppet apply before we get all
the hosts there. Since we run most of the hosts in a big matching
mechanism, the way we can pass different input values to each host.

Change-Id: I5698355df0c13cd11fe5987787e65ee85a384256

playbooks/group_vars/all.yaml

@@ -0,0 +1 @@
+puppetmaster: puppetmaster.openstack.org

playbooks/remote_puppet_afs.yaml

@@ -2,4 +2,4 @@
 - hosts: "afs*"
   gather_facts: false
   roles:
-    - { role: puppet, puppetmaster: puppetmaster.openstack.org }
+  - role: puppet

playbooks/remote_puppet_else.yaml

@@ -1,5 +1,4 @@
----
-- hosts: "!review.openstack.org:!git0*:!afs*"
+- hosts: '!review.openstack.org:!git0*:!afs*'
   gather_facts: false
   roles:
-    - { role: puppet, puppetmaster: puppetmaster.openstack.org }
+  - role: puppet

playbooks/remote_puppet_git.yaml

@@ -12,13 +12,11 @@
   max_fail_percentage: 1
   roles:
     - role: puppet
-      puppetmaster: puppetmaster.openstack.org
       facts:
         project_config_ref: "{{ hostvars.localhost.gitinfo.after }}"
 - hosts: review.openstack.org
   gather_facts: false
   roles:
     - role: puppet
-      puppetmaster: puppetmaster.openstack.org
       facts:
         project_config_ref: "{{ hostvars.localhost.gitinfo.after }}"