Added search index params on confpy

otc_metadata/templates/conf.py.j2

@@ -37,6 +37,15 @@ otcdocs_git_fqdn = '{{ git_fqdn }}'
 otcdocs_git_type = '{{ git_type }}'
 {%- endif %}
 
+# Those variables are needed for indexing into OpenSearch
+otcdocs_doc_environment = '{{ doc_environment }}'
+otcdocs_doc_link = '{{ doc_link }}'
+otcdocs_doc_title = '{{ doc_title }}'
+otcdocs_doc_type = '{{ doc_type }}'
+otcdocs_service_title = '{{ service_title }}'
+otcdocs_service_type = '{{ service_type }}'
+otcdocs_service_category = '{{ service_category }}'
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.