Add pull tasks for nodepool/zuul

So we can stop/pull/start, move the pull tasks to their own files
and add a playbook that invokes them.

Change-Id: I4f351c1d28e5e4606e0a778e545a3a805525ac71

playbooks/nodepool_pull.yaml

@@ -0,0 +1,16 @@
+# Run this with "-f 20"
+
+
+- hosts: 'nodepool-builder:!disabled'
+  any_errors_fatal: true
+  tasks:
+    - include_role:
+        name: nodepool-builder
+        tasks_from: pull
+
+- hosts: 'nodepool-launcher:!disabled'
+  any_errors_fatal: true
+  tasks:
+    - include_role:
+        name: nodepool-launcher
+        tasks_from: pull

playbooks/roles/nodepool-builder/tasks/main.yaml

@@ -31,10 +31,8 @@
     dest: /etc/nodepool-builder-compose/docker-compose.yaml
     mode: 0644
 
-- name: Run docker-compose pull
-  shell:
-    cmd: docker-compose pull
-    chdir: /etc/nodepool-builder-compose/
+- name: Update container images
+  include_tasks: pull.yaml
 
 - name: Start nodepool builder
   include_tasks: start.yaml

playbooks/roles/nodepool-builder/tasks/pull.yaml

@@ -0,0 +1,4 @@
+- name: Run docker-compose pull
+  shell:
+    cmd: docker-compose pull
+    chdir: /etc/nodepool-builder-compose/

playbooks/roles/nodepool-launcher/tasks/main.yaml

@@ -45,10 +45,8 @@
     src: docker-compose.yaml.j2
     dest: /etc/nodepool-docker/docker-compose.yaml
 
-- name: Run docker-compose pull
-  shell:
-    cmd: docker-compose pull
-    chdir: /etc/nodepool-docker/
+- name: Update container images
+  include_tasks: pull.yaml
 
 - name: Start nodepool launcher
   include_tasks: start.yaml

playbooks/roles/nodepool-launcher/tasks/pull.yaml

@@ -0,0 +1,4 @@
+- name: Run docker-compose pull
+  shell:
+    cmd: docker-compose pull
+    chdir: /etc/nodepool-docker/

playbooks/roles/zuul-executor/tasks/main.yaml

@@ -78,10 +78,8 @@
     src: docker-compose.yaml
     dest: /etc/zuul-executor/docker-compose.yaml
 
-- name: Run docker-compose pull
-  shell:
-    cmd: docker-compose pull
-    chdir: /etc/zuul-executor
+- name: Update container images
+  include_tasks: pull.yaml
 
 - name: Start containers
   include_tasks: start.yaml

playbooks/roles/zuul-executor/tasks/pull.yaml

@@ -0,0 +1,4 @@
+- name: Run docker-compose pull
+  shell:
+    cmd: docker-compose pull
+    chdir: /etc/zuul-executor

playbooks/roles/zuul-merger/tasks/main.yaml

@@ -42,10 +42,8 @@
     src: docker-compose.yaml
     dest: /etc/zuul-merger/docker-compose.yaml
 
-- name: Run docker-compose pull
-  shell:
-    cmd: docker-compose pull
-    chdir: /etc/zuul-merger
+- name: Update container images
+  include_tasks: pull.yaml
 
 - name: Start containers
   include_tasks: start.yaml

playbooks/roles/zuul-merger/tasks/pull.yaml

@@ -0,0 +1,4 @@
+- name: Run docker-compose pull
+  shell:
+    cmd: docker-compose pull
+    chdir: /etc/zuul-merger

playbooks/roles/zuul-scheduler/tasks/main.yaml

@@ -63,10 +63,8 @@
     src: docker-compose.yaml
     dest: /etc/zuul-scheduler/docker-compose.yaml
 
-- name: Run docker-compose pull
-  shell:
-    cmd: docker-compose pull
-    chdir: /etc/zuul-scheduler
+- name: Update container images
+  include_tasks: pull.yaml
 
 - name: Start containers
   include_tasks: start.yaml

playbooks/roles/zuul-scheduler/tasks/pull.yaml

@@ -0,0 +1,4 @@
+- name: Run docker-compose pull
+  shell:
+    cmd: docker-compose pull
+    chdir: /etc/zuul-scheduler

playbooks/roles/zuul-web/tasks/main.yaml

@@ -100,10 +100,8 @@
     src: docker-compose.yaml
     dest: /etc/zuul-web/docker-compose.yaml
 
-- name: Run docker-compose pull
-  shell:
-    cmd: docker-compose pull
-    chdir: /etc/zuul-web
+- name: Update container images
+  include_tasks: pull.yaml
 
 - name: Start containers
   include_tasks: start.yaml

playbooks/roles/zuul-web/tasks/pull.yaml

@@ -0,0 +1,4 @@
+- name: Run docker-compose pull
+  shell:
+    cmd: docker-compose pull
+    chdir: /etc/zuul-web

playbooks/zuul_pull.yaml

@@ -0,0 +1,23 @@
+# Run this with "-f 20"
+
+- hosts: 'zuul-scheduler:!disabled'
+  any_errors_fatal: true
+  tasks:
+    - include_role:
+        name: zuul-scheduler
+        tasks_from: pull
+    - include_role:
+        name: zuul-web
+        tasks_from: pull
+
+- hosts: 'zuul-merger:!disabled'
+  tasks:
+    - include_role:
+        name: zuul-merger
+        tasks_from: pull
+
+- hosts: 'zuul-executor:!disabled'
+  tasks:
+    - include_role:
+        name: zuul-executor
+        tasks_from: pull