Revert "manage_pdb: Enter nested loop only when oracle_pdbs has an entry"

This reverts commit 30fa983.

Author: oraculix

changelogs/fragments/create_omf_database.yml

@@ -1,3 +1,3 @@
 ---
 minor_changes:
-  - "manage_pdb: Enter nested loop only when oracle_pdbs has an entry"
+  - create OMF enabled databases using dbca's -useOMF flag

roles/oradb_manage_pdb/tasks/main.yml

@@ -27,7 +27,7 @@
       environment: "{{ _oracle_env }}"
       with_nested:
         - "{{ oracle_databases }}"
-        - "{{ oracle_pdbs | default([]) }}"
+        - "{{ oracle_pdbs }}"
       become: true
       become_user: "{{ oracle_user }}"
       loop_control: