Use relative path to get metadata

Change-Id: Ic88027945c4d4ad04a4dec83e00e44aac5c0b890

roles/charm-publish/tasks/publish.yaml

@@ -19,24 +19,21 @@
       include_role:
         name: ensure-docker
 
-    - name: Set project absolute path
-      set_fact:
-        project_abs: "{{ zuul.executor.work_root }}/{{ zuul.project.src_dir }}"
-
     - name: Create charm destination folder
       file:
-        path: "{{ project_abs }}/{{ charm_build_name }}"
+        path: "{{ zuul.project.src_dir }}/{{ charm_build_name }}"
         state: directory
+        mode: "0755"
 
     - name: Decompress charm
       unarchive:
-        src: "{{ project_abs }}/{{ charm_build_name }}.charm"
-        dest: "{{ project_abs }}/{{ charm_build_name }}"
+        src: "{{ zuul.project.src_dir }}/{{ charm_build_name }}.charm"
+        dest: "{{ zuul.project.src_dir }}/{{ charm_build_name }}"
 
     - name: Upload oci-image to charmhub
       register: upload_oci_image_output
       vars:
-        metadata: "{{ lookup('file', project_abs + '/' + charm_build_name + '/metadata.yaml') | from_yaml }}"
+        metadata: "{{ lookup('file', zuul.executor.work_root + '/' + zuul.project.src_dir + '/' + charm_build_name + '/metadata.yaml') | from_yaml }}"
       args:
         executable: /bin/bash
       shell: |