[copr] override option OS_USERNAME for old cloud

roles/copr/backend/files/provision/builderpb.yml

@@ -10,6 +10,7 @@
   vars:
   - security_group: builder
   - image_id: cba0c766-84ac-4048-b0f5-6d4000af62f8
+  - OS_USERNAME: msuchy
 
   tasks:
   - name: generate builder name

roles/copr/backend/files/provision/terminatepb.yml

@@ -7,6 +7,9 @@
   vars_files:
   - nova_cloud_vars.yml
 
+  vars:
+  - OS_USERNAME: msuchy
+
   tasks:
   - name: terminate it
     local_action: nova_compute auth_url={{OS_AUTH_URL}} login_password={{OS_PASSWORD}} login_tenant_name={{OS_TENANT_NAME}} login_username={{OS_USERNAME}} name="{{copr_task.vm_name}}" state=absent