Use full paths to projects in the playbook

Let's use full paths to the projects cloned by zuul
It will help to set path_to_tempest_config and
path_to_accounts_file to full paths as well. Currently
they contained just relative paths (relative to the
refstack-client's source) which has been causing problems
in the post_tasks as fetch doesn't work reliably with
ansible chdir option.

Change-Id: I062ca182c30c9916d2a17c44f29bc85cec81db94

playbooks/refstack-client-devstack.yaml

@@ -23,11 +23,8 @@
     - name: Run ansible-role-refstack-client
       include_tasks: ../tasks/main.yaml
       vars:
-        refstack_client_source: "{{ zuul.projects['opendev.org/osf/refstack-client'].src_dir }}"
+        refstack_client_source: "/home/zuul/{{ zuul.projects['opendev.org/osf/refstack-client'].src_dir }}"
-        # the task which installs refstack-client changes dir to the refstack-client's
+        tempestconf_source: "/home/zuul/{{ zuul.projects['opendev.org/osf/python-tempestconf'].    src_dir }}"
-        # location, python-tempestconf is in the same org (osf) so it's cloned
-        # just one level up by the zuul
-        tempestconf_source: "../python-tempestconf"
         source_credentials: "{{ devstack_base_dir }}/devstack/openrc demo demo"
         source_admin_credentials: "{{ devstack_base_dir }}/devstack/openrc admin admin"
         additional_tempestconf_params: "auth.tempest_roles Member object-storage.operator_role Member"

tasks/generate-accounts.yaml

@@ -65,4 +65,4 @@
 
 - name: Set path to newly generated accounts.yaml
   set_fact:
-    path_to_accounts_file: "./etc/accounts.yaml"
+    path_to_accounts_file: "{{ refstack_client_source }}/etc/accounts.yaml"

tasks/generate-tempestconf.yaml

@@ -23,4 +23,4 @@
 
 - name: Set path to newly generated tempest.conf
   set_fact:
-    path_to_tempest_config: "./etc/tempest.conf"
+    path_to_tempest_config: "{{ refstack_client_source }}/etc/tempest.conf"

tasks/post-tasks.yaml

@@ -69,13 +69,9 @@
         src: "{{ path_to_tempest_config }}"
         dest: "{{ dest_dir }}/tempest.conf"
         flat: true
-      args:
-        chdir: "{{ refstack_client_source }}"
 
     - name: Download accounts.yaml file
       fetch:
         src: "{{ path_to_accounts_file }}"
         dest: "{{ dest_dir }}/accounts.yaml"
         flat: true
-      args:
-        chdir: "{{ refstack_client_source }}"