Fix Swift storage migration wait condition

oc wait fails if the storage instances have not been created yet.
This fix will retry to ensure it does not fail before instances are
created.

tests/roles/swift_migration/tasks/main.yaml

@@ -18,7 +18,11 @@
 - name: wait until all pods are ready
   ansible.builtin.shell: |
     {{ oc_header }}
-    oc wait pods --for condition=Ready -l component=swift-storage
+    oc wait pods --for condition=Ready --timeout=60s -l component=swift-storage
+  register: swift_storage_ready_result
+  until: swift_storage_ready_result is success
+  retries: 60
+  delay: 2
 
 - name: set standalone node weight to 0 in swift rings
   ansible.builtin.shell: |