Pull fetch-output back out of base

Instead of updating upload-logs to upload docs and artifacts, or
making upload-docs and upload-artifacts roles, if we rework fetch-output
to put things into the logs directory appropriately when it fetches,
we can accomplish the same outcome more simply.

Since we just landed fetch-output and nothing depends on it yet, removing
it from base jobs will let us safely make the changes and validate
via base-test without too many dances.

Change-Id: I2c411358e4857f74a44e5ea083a57f58e30c1ae7

playbooks/base-minimal/post.yaml

@@ -1,7 +1,3 @@
-- hosts: all
-  roles:
-    - fetch-output
-
 - hosts: all
   # NOTE(pabelanger): We ignore_errors for the following tasks as not to fail
   # successful jobs.

playbooks/base-ozj/post.yaml

@@ -1,7 +1,3 @@
-- hosts: all
-  roles:
-    - fetch-output
-
 - hosts: all
   # NOTE(pabelanger): We ignore_errors for the following tasks as not to fail
   # successful jobs.

playbooks/base/post.yaml

@@ -1,7 +1,3 @@
-- hosts: all
-  roles:
-    - fetch-output
-
 - hosts: all
   # NOTE(pabelanger): We ignore_errors for the following tasks as not to fail
   # successful jobs.