Integration tests: differentiate labels for different pipelines

zuul.change isn't available in the post and periodic pipelines so we
shouldn't try to include it.

We're splitting this into a different file so we can add more things
later.

Change-Id: I53a257aafba395e07afc0a1755e26cab28c1b2f0

tests/basic.yaml

@@ -89,14 +89,8 @@
       command: "{{ ara_api_venv_path }}/bin/python -m ara.setup.plugins"
       register: ara_setup_plugins
 
-    - name: Set default labels with Zuul
-      set_fact:
-        _default_labels:
-          - "nodepool.provider:{{ nodepool.provider }}"
-          - "zuul.change:{{ zuul.change }}"
-          - "zuul.executor:{{ zuul.executor.hostname }}"
-          - "zuul.pipeline:{{ zuul.pipeline }}"
-          - "zuul.project:{{ zuul.project.canonical_name }}"
+    - name: Record Zuul metadata for ARA playbooks
+      include_tasks: zuul_metadata.yaml
       when: zuul is defined
 
     - name: Template an ansible.cfg file

tests/test_tasks.yaml

@@ -63,14 +63,8 @@
   changed_when: false
   register: ara_setup_plugins
 
-- name: Set default labels with Zuul
-  set_fact:
-    _default_labels:
-      - "nodepool.provider:{{ nodepool.provider }}"
-      - "zuul.change:{{ zuul.change }}"
-      - "zuul.executor:{{ zuul.executor.hostname }}"
-      - "zuul.pipeline:{{ zuul.pipeline }}"
-      - "zuul.project:{{ zuul.project.canonical_name }}"
+- name: Record Zuul metadata for ARA playbooks
+  include_tasks: zuul_metadata.yaml
   when: zuul is defined
 
 # These aren't in the same task (i.e, with loop) so we can tell individual test

tests/zuul_metadata.yaml

@@ -0,0 +1,24 @@
+- name: Set default labels for check, gate and promote pipelines
+  set_fact:
+    _default_labels:
+      - "nodepool.provider:{{ nodepool.provider }}"
+      - "zuul.change:{{ zuul.change }}"
+      - "zuul.executor:{{ zuul.executor.hostname }}"
+      - "zuul.job:{{ zuul.job }}"
+      - "zuul.pipeline:{{ zuul.pipeline }}"
+      - "zuul.project:{{ zuul.project.canonical_name }}"
+  when:
+    - zuul.pipeline is defined
+    - zuul.pipeline in ["check", "gate", "promote"]
+
+- name: Set default labels for periodic and post pipelines
+  set_fact:
+    _default_labels:
+      - "nodepool.provider:{{ nodepool.provider }}"
+      - "zuul.executor:{{ zuul.executor.hostname }}"
+      - "zuul.job:{{ zuul.job }}"
+      - "zuul.pipeline:{{ zuul.pipeline }}"
+      - "zuul.project:{{ zuul.project.canonical_name }}"
+  when:
+    - zuul.pipeline is defined
+    - zuul.pipeline in ["periodic", "post"]