Add fetch-output to base jobs

This change was added in OpenStack's base job as part of the effort to
provide a standard interface on the remote nodes into which logs can be put
regardless of how they are eventually going to be uploaded.

Change-Id: I07f1a88f357c68d3deeadf7f12b1b77fc4a948f4

playbooks/base-test/post.yaml

@@ -1,3 +1,7 @@
+- hosts: all
+  roles:
+    - fetch-output
+
 - hosts: all
   roles:
     - remove-build-sshkey

playbooks/base/post.yaml

@@ -1,3 +1,7 @@
+- hosts: all
+  roles:
+    - fetch-output
+
 - hosts: all
   roles:
     - remove-build-sshkey

zuul.yaml

@@ -10,7 +10,7 @@
 
       It also sets a default timeout value (which may be overidden).
     pre-run: playbooks/base/pre.yaml
-    post-run: playbooks/base/post-ssh.yaml
+    post-run: playbooks/base/post.yaml
     roles:
       - zuul: git.zuul-ci.org/zuul-jobs
     timeout: 1800
@@ -22,7 +22,7 @@
       A job to test changes to the base job without disturbing the
       main job in production.  Not for general use.
     pre-run: playbooks/base-test/pre.yaml
-    post-run: playbooks/base-test/post-ssh.yaml
+    post-run: playbooks/base-test/post.yaml
     roles:
       - zuul: git.zuul-ci.org/zuul-jobs
     timeout: 1800