Fix packstack jobs and improve playbook's style

Fix the permission denied issue in packstack jobs and make
the playbooks more readable.

Change-Id: I772bb81c3d10c959055a0c0b872b33e776f50786

playbooks/python-tempestconf-tempest-devstack.yaml

@@ -20,6 +20,7 @@
     - name: Setup Tempest Run Directory
       include_role:
         name: setup-tempest-run-dir
+
     - name: Setup Tempest Data Directory
       include_role:
         name: setup-tempest-data-dir
@@ -37,15 +38,18 @@
     - name: ACL devstack files
       include_role:
         name: acl-devstack-files
+
     - name: Edit clouds.yaml file
       include_role:
         name: tempestconf-workaround-auth-url
+
     - name: Generate tempest configuration file
       include_role:
         name: generate-tempestconf-file
       vars:
         create_accounts_file: True
         source_credentials_commands: "export HOST_IP={{ ansible_default_ipv4.address }}; source {{ devstack_base_dir }}/devstack/openrc {{ user }} {{ user }}; {{ set_auth_url }}"
+
     - name: Generate tempest configuration file based on cloud credentials
       include_role:
         name: generate-tempestconf-file-cloud
@@ -55,13 +59,17 @@
       include_role:
         name: run-tempest
       when: plugins_paths is not defined
-    - block:
+
+    - when: plugins_paths is defined
+      block:
         - name: Install tempest plugins
           include_role:
             name: install-plugins
+
         - name: Setup Tempest Run Directory
           include_role:
             name: setup-tempest-run-dir
+
         - name: Run Tempest Tests including plugins
           include_role:
             name: run-tempest
@@ -69,4 +77,3 @@
             tox_envlist: "all"
             tempest_test_regex: "{{ test_regex|join('|') }}"
             tempest_black_regex: "{{ black_regex|join('|') }}"
-      when: plugins_paths is defined

playbooks/python-tempestconf-tempest-packstack.yaml

@@ -1,6 +1,4 @@
 - hosts: all
-  vars:
-    test_demo_user: "{{ test_demo is defined }}"
   tasks:
     # Disable packstack logs copy once packstack deployment finishes
     # packstack-integration-tempest role is inherited from
@@ -10,23 +8,31 @@
         name: packstack-integration-tempest
       environment:
         COPY_LOGS: false
+
+- hosts: tempest
+  vars:
+    test_demo_user: "{{ test_demo is defined }}"
+  tasks:
     # setup-tempest-user, setup-stack-user and setup-devstack-source-dirs
     # are inherited from openstack/devstack
     - name: Setup Stack user
       include_role:
         name: setup-stack-user
+
     - name: Setup Tempest user
       include_role:
         name: setup-tempest-user
+
     - name: Setup Tempest user
       include_role:
         name: setup-devstack-source-dirs
+
     # setup-tempest-* and acl-devstack-files roles are inherited from
     # openstack/tempest project
-
     - name: Setup Tempest Run Directory
       include_role:
         name: setup-tempest-run-dir
+
     - name: Setup Tempest Data Directory
       include_role:
         name: setup-tempest-data-dir
@@ -44,20 +50,24 @@
     - name: ACL devstack files
       include_role:
         name: acl-devstack-files
+
     - name: Prepare keystonerc credentials generated by packstack
       include_role:
         name: create-keystonerc-files
+
     - name: Create clouds.yaml file
       include_role:
         name: create-clouds-yaml-file
       vars:
         cloudname: "packstack-admin"
         source_credentials_commands: "source {{ ansible_user_dir }}/keystonerc_admin"
+
     - name: Generate configuration file for Tempest
       include_role:
         name: generate-tempestconf-file
       vars:
         source_credentials_commands: "source {{ ansible_user_dir }}/keystonerc_{{ user }}"
+
     # Let's create tempest.conf with admin permissions needed for
     # tempest accounts file generation
     - name: Generate configuration file for Tempest as admin
@@ -70,6 +80,7 @@
         test_demo_user: False
         user: admin
       when: test_demo is defined
+
     - name: Generate accounts file for Tempest
       include_role:
         name: generate-accounts-file
@@ -78,6 +89,7 @@
         source_credentials_commands: "source {{ ansible_user_dir }}/keystonerc_admin"
         tempest_config_file: "/etc/openstack/tempest_admin.conf"
       when: test_demo is defined
+
     # run-tempest role is inherited from openstack/tempest project
     - name: Run Tempest Tests
       include_role: