fetch_subunit: Change variable

Change new variable zuul_additional_subunit_dirs to
fetch_subunit_output_additional_dirs to name it after the role.

Change-Id: I7ac0b5d343701409a8741439334fe27f5374a258

roles/fetch-subunit-output/README.rst

@@ -7,7 +7,7 @@ Collect subunit outputs
 
    Directory to work in. It has to be a fully qualified path.
 
-.. zuul:rolevar:: zuul_additional_subunit_dirs
+.. zuul:rolevar:: fetch_subunit_output_additional_dirs
    :default: []
 
    List of additional directories which contains subunit files

roles/fetch-subunit-output/defaults/main.yaml

@@ -1,4 +1,4 @@
 ---
 tox_envlist: ""
-zuul_additional_subunit_dirs: []
+fetch_subunit_output_additional_dirs: []
 zuul_work_dir: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}"

roles/fetch-subunit-output/tasks/main.yaml

@@ -11,7 +11,7 @@
   block:
     - name: Get the list of directories with subunit files
       set_fact:
-        all_subunit_dirs: "{{ [ zuul_work_dir ] + zuul_additional_subunit_dirs }}"
+        all_subunit_dirs: "{{ [ zuul_work_dir ] + fetch_subunit_output_additional_dirs }}"
 
     # The usage an independent target file instead of sending the output
     # to zuul_work_dir prevents issues related to zuul_work_dir being

test-playbooks/base-roles/fetch-subunit-output.yaml

@@ -86,7 +86,7 @@
   hosts: all
   roles:
     - role: fetch-subunit-output
-      zuul_additional_subunit_dirs:
+      fetch_subunit_output_additional_dirs:
         - "/var/tmp/extratests"
   post_tasks:
     - name: Check that the testrepository file has been pulled