fix conf.py template disable_search

Reviewed-by: Goncharov, Artem <artem.goncharov@t-systems.com>
Co-authored-by: gtema <artem.goncharov@gmail.com>
Co-committed-by: gtema <artem.goncharov@gmail.com>

roles/convert_doc/tasks/main.yaml

@@ -1,30 +1,45 @@
 - name: Emit pandoc version
   command: "pandoc --version"
 
+# Since role is applied in the loop it is necessary to unset host facts
+- name: Reset convert_params
+  ansible.builtin.set_fact:
+    convert_params: ""
+
 - name: Add destination to parameters
   ansible.builtin.set_fact:
     convert_params: "{{ convert_params }} --dest {{ dest }}"
-  when: "dest is defined"
+  when:
+    - "dest is defined"
+    - "dest | length > 0"
 
 - name: Add title to parameters
   ansible.builtin.set_fact:
     convert_params: "{{ convert_params }} --title '{{ doc_title }}'"
-  when: "doc_title is defined"
+  when:
+    - "doc_title is defined"
+    - "doc_title | length > 0"
 
 - name: Add service to parameters
   ansible.builtin.set_fact:
     convert_params: "{{ convert_params }} --service '{{ doc_service }}'"
-  when: "doc_service is defined"
+  when:
+    - "doc_service is defined"
+    - "doc_service | length > 0"
 
 - name: Add repo_name to parameters
   ansible.builtin.set_fact:
     convert_params: "{{ convert_params }} --repo-name '{{ doc_repo_name }}'"
-  when: "doc_repo_name is defined"
+  when:
+    - "doc_repo_name is defined"
+    - "doc_repo_name | length > 0"
 
 - name: Add pdf_name to parameters
   ansible.builtin.set_fact:
     convert_params: "{{ convert_params }} --pdf-name {{ doc_pdf_name }}"
-  when: "doc_pdf_name is defined"
+  when:
+    - "doc_pdf_name is defined"
+    - "doc_pdf_name | length > 0"
 
 - name: Add templates-location to parameters
   ansible.builtin.set_fact: