Create fetch-tox-output role

We can move the content from tox/post.yaml into an ansible role. This
allows other projects to use it.

Change-Id: Ic7fc31a372de29a3a97ef84539faf3b0a1d6e181
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

playbooks/tox/post.yaml

@@ -1,34 +1,3 @@
 - hosts: all
-  tasks:
-    - name: Find tox directories to synchrionize
-      find:
-        file_type: directory
-        paths: "src/{{ zuul.project.canonical_name }}/.tox"
-        # NOTE(pabelanger): The .tox/log folder is empty, ignore it.
-        patterns: ^(?!log).*$
-        use_regex: yes
-      register: result
-
-    - name: Set tox log path for multiple nodes
-      set_fact:
-        log_path: "{{ zuul.executor.log_root }}/{{ inventory_hostname }}/tox"
-      when: groups['all'] | length > 1
-
-    - name: Set tox log path for single node
-      set_fact:
-        log_path: "{{ zuul.executor.log_root }}/tox"
-      when: log_path is not defined
-
-    - name: Ensure local tox dir
-      file:
-        path: "{{ log_path }}"
-        state: directory
-      delegate_to: localhost
-
-    - name: Collect tox logs
-      synchronize:
-        dest: "{{ log_path }}"
-        mode: pull
-        src: "{{ item.path }}/log/"
-        verify_host: true
-      with_items: "{{ result.files }}"
+  roles:
+    - fetch-tox-output

roles/fetch-tox-output/README.rst

@@ -0,0 +1 @@
+Collect output from a tox build

roles/fetch-tox-output/defaults/main.yaml

@@ -0,0 +1,2 @@
+---
+zuul_work_dir: "src/{{ zuul.project.canonical_name }}"

roles/fetch-tox-output/tasks/main.yaml

@@ -0,0 +1,32 @@
+- name: Find tox directories to synchrionize
+  find:
+    file_type: directory
+    paths: "{{ zuul_work_dir }}/.tox"
+    # NOTE(pabelanger): The .tox/log folder is empty, ignore it.
+    patterns: ^(?!log).*$
+    use_regex: yes
+  register: result
+
+- name: Set tox log path for multiple nodes
+  set_fact:
+    log_path: "{{ zuul.executor.log_root }}/{{ inventory_hostname }}/tox"
+  when: groups['all'] | length > 1
+
+- name: Set tox log path for single node
+  set_fact:
+    log_path: "{{ zuul.executor.log_root }}/tox"
+  when: log_path is not defined
+
+- name: Ensure local tox dir
+  file:
+    path: "{{ log_path }}"
+    state: directory
+  delegate_to: localhost
+
+- name: Collect tox logs
+  synchronize:
+    dest: "{{ log_path }}"
+    mode: pull
+    src: "{{ item.path }}/log/"
+    verify_host: true
+  with_items: "{{ result.files }}"