Convert storyboard-docs, -announce-release to ubuntu-trusty

Use ubuntu-trusty instead of bare-trusty for storyboard-docs and
{name}-announce-release jobs.

Change-Id: I0d22c4ac7a2e9aa31eaa5938d19a2b9de987d73b

jenkins/jobs/python-jobs.yaml

@@ -340,13 +340,14 @@
 
 - job-template:
     name: '{name}-announce-release'
-    node: bare-trusty
+    node: ubuntu-trusty
 
     builders:
       - print-template-name:
           template-name: "{template-name}"
-      - revoke-sudo
       - gerrit-git-prep
+      - install-distro-packages
+      - revoke-sudo
       - shell: |
           #!/bin/bash
 

jenkins/jobs/storyboard.yaml

@@ -1,11 +1,12 @@
 # This is a non-standard docs job because it uses SCP instead of FTP
 - job:
     name: storyboard-docs
-    node: bare-trusty
+    node: ubuntu-trusty
 
     builders:
-      - revoke-sudo
       - gerrit-git-prep
+      - install-distro-packages
+      - revoke-sudo
       - docs
 
     publishers: