Simplify group_names variable

As noted in [1] the group_names variable is a top-level variable and
doesn't need to be accessed via the hostvars object.

[1] https://review.openstack.org/#/c/572861/1/playbooks/remote_puppet_adhoc.yaml

Change-Id: Ic895f177019b31da34cdf91a6dd62dc99a649754

playbooks/remote_puppet_adhoc.yaml

@@ -5,4 +5,4 @@
   - role: puppet
     manage_config: True
     puppet_reports: none
-    futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+    futureparser: "{{ True if 'futureparser' in group_names else False }}"

playbooks/remote_puppet_afs.yaml

@@ -6,4 +6,4 @@
   - role: puppet
     manage_config: True
     puppet_reports: none
-    futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+    futureparser: "{{ True if 'futureparser' in group_names else False }}"

playbooks/remote_puppet_else.yaml

@@ -5,4 +5,4 @@
   - role: puppet
     manage_config: True
     puppet_reports: none
-    futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+    futureparser: "{{ True if 'futureparser' in group_names else False }}"

playbooks/remote_puppet_git.yaml

@@ -14,7 +14,7 @@
       copy_puppet: False
       manage_config: True
       puppet_reports: none
-      futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+      futureparser: "{{ True if 'futureparser' in group_names else False }}"
 - hosts: "git0*:!disabled"
   strategy: free
   gather_facts: true
@@ -25,7 +25,7 @@
         project_config_ref: "{{ hostvars.localhost.gitinfo.after }}"
       manage_config: True
       puppet_reports: none
-      futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+      futureparser: "{{ True if 'futureparser' in group_names else False }}"
 - hosts: "review:!disabled"
   strategy: free
   gather_facts: true
@@ -36,7 +36,7 @@
       puppet_timeout: 60m
       manage_config: True
       puppet_reports: none
-      futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+      futureparser: "{{ True if 'futureparser' in group_names else False }}"
 - hosts: "zuul-scheduler:!disabled"
   strategy: free
   gather_facts: true
@@ -47,4 +47,4 @@
       puppet_timeout: 60m
       manage_config: True
       puppet_reports: none
-      futureparser: "{{ True if 'futureparser' in hostvars[inventory_hostname].group_names else False }}"
+      futureparser: "{{ True if 'futureparser' in group_names else False }}"