[Fix] Fix post-merge doc publish job

- Add secret attachment to the job

Change-Id: I21b7e83abc3a457e88e888be3609bb78cec23cb2

.zuul.yaml

@@ -102,11 +102,13 @@
     description: |
       Publish documentation on airship-drydock.readthedocs.io
     run: tools/gate/playbooks/doc-publish.yaml
+    secrets:
+      - airship_drydock_readthedocs
     timeout: 300
     nodeset: airship-drydock-single-node
 
 - secret:
-    name: readthedocs
+    name: airship_drydock_readthedocs
     data:
       url: !encrypted/pkcs1-oaep
         - dcOaNb6+3zCSp8rlmaA8U/v8kxzsB9MPqmbfbFSoyCsXOAMvluYSitmF7XpYdZLOXPOvm

tools/gate/playbooks/doc-publish.yaml

@@ -12,8 +12,8 @@
 
 - hosts: primary
   tasks:
-    - name: Publish current merged documents on readthedocs.org
+    - name: Publish current merged documents on readthedocs
       shell: |
-        curl -X POST -d "token={{ readthedocs.token }}" "{{ readthedocs.url }}"
+        curl -X POST -d "token={{ airship_drydock_readthedocs.token }}" "{{ airship_drydock_readthedocs.url }}"
       register: result
       failed_when: result.failed