feat: export scm_refspec of project (redhat-cop#912)

* feat: export scm_refspace of project

* fix: typo

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Co-authored-by: Przemyslaw Kalitowski <przemyslaw@kalitowski.com>
Co-authored-by: Ivan Aragonés Muniesa <26822043+ivarmu@users.noreply.github.com>

roles/filetree_create/templates/current_projects.j2

@@ -16,6 +16,7 @@ controller_projects:
     scm_delete_on_update: "{{ current_projects_asset_value.scm_delete_on_update }}"
     scm_update_on_launch: "{{ current_projects_asset_value.scm_update_on_launch }}"
     scm_update_cache_timeout: "{{ current_projects_asset_value.scm_update_cache_timeout }}"
+    scm_refspec: "{{ current_projects_asset_value.scm_refspec }}
 {% endif %}
 {% if is_aap and current_job_templates_asset_value.summary_fields.default_environment is defined %}
     default_environment: "{{ current_job_templates_asset_value.summary_fields.default_environment.name }}"