Fix indentation for the rendered launcher-playbook

Fix badly formatted job vars placement, e.g.:

      - job:
          name: foo-dlrn-hash-tag
          parent: foo
          vars:
            mirror_fqdn: {{ mirror_path }}
            ready_releases_file: |
              #!/bin/env bash
              export STANDALONE_TARGET_HASH="bar"

                        registry_login_enabled: false

Change-Id: I80d06cb66bdc725b70ecb5ef938026a36e793dcf
Signed-off-by: Bogdan Dobrelya <bdobreli@redhat.com>

roles/create-zuul-based-reproducer/templates/launcher-playbook.yaml.j2

@@ -103,7 +103,7 @@
             {% endif -%}
             {% if 'periodic' in zuul.job -%}
             force_periodic: true
-            {% endif %}
+            {% endif -%}
             registry_login_enabled: false
             featureset_override:
               {% if featureset_override_file_output is defined -%}