Collect logs in post-run

Change-Id: I202c86e941b4980959496ee05bd3df1707367c06

.zuul.d/playbooks-deploy/post.yml

@@ -6,3 +6,16 @@
       command: "shred -u {{ vault_key_path }}"
       args:
         removes: "{{ vault_key_path }}"
+    - name: Run the log collection script
+      shell: |
+        source scripts/scripts-library.sh
+        gate_job_exit_tasks
+      become: yes
+      become_user: root
+      args:
+        chdir: "{{ lsn_ci_src_path }}/openstack-ansible"
+        executable: /bin/bash
+      environment:
+        GATE_EXIT_LOG_COPY: true
+        GATE_LOG_DIR: "{{ lsn_ci_src_path }}/logs"
+        GATE_EXIT_RUN_ARA: false