Do not interpolate values from tox --showconfig

Change-Id: I8ffa7d164e0afd2a325bc5b4d76d4dc75d330739

roles/tox/library/tox_install_sibling_packages.py

@@ -272,7 +272,7 @@ def main():
     tox_envlist = module.params.get('tox_envlist', '')
     tox_show_config = module.params.get('tox_show_config')
 
-    tox_config = configparser.ConfigParser()
+    tox_config = configparser.RawConfigParser()
     tox_config.read(tox_show_config)
 
     envlist = {testenv.strip() for testenv

test-playbooks/python/tox.ini

@@ -10,3 +10,6 @@ commands = sh -c "echo linters >> {posargs}"
 
 [testenv:non-default]
 commands = sh -c "echo non-default >> {posargs}"
+
+[testenv:%s]
+commands = sh -c "echo working"

test-playbooks/python/tox.yaml

@@ -32,9 +32,6 @@
             tox_extra_args: "{{ default_tempfile.path }}"
             tox_install_siblings: false
             tox_envlist: ''
-            tox_environment:
-              ANSIBLE_ROLES_PATH: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}/roles"
-              ANSIBLE_LIBRARY: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}/tests/fake-ansible"
 
         - name: Make sure magic lines are present
           lineinfile:
@@ -62,9 +59,6 @@
             tox_install_siblings: false
             tox_extra_args: "{{ ALL_tempfile.path }}"
             tox_envlist: 'ALL'
-            tox_environment:
-              ANSIBLE_ROLES_PATH: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}/roles"
-              ANSIBLE_LIBRARY: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}/tests/fake-ansible"
       always:
         - name: Make sure magic lines are present
           loop:
@@ -76,3 +70,10 @@
           check_mode: true
           register: ALL_status
           failed_when: ALL_status is changed
+
+    - name: Run tox with tox_envlist = %s
+      include_role:
+        name: tox
+      vars:
+        zuul_work_dir: "{{ zuul.project.src_dir }}/test-playbooks/python/"
+        tox_envlist: '%s'