Use py3k-precise nodes

Switch to running python33 and pypy unit tests on py3k-precise nodes
once Ic03b9532ec0ad8b6abe8171855e6c33f7dcffef2 merges and the
additional images/nodes are ready for action.

Change-Id: I98ad3a1171034cda1236dbb6dbfaddc2e26934cf

modules/openstack_project/files/jenkins_job_builder/config/python-jobs.yaml

@@ -114,7 +114,7 @@
       - test-results
       - console-log
 
-    node: precisepy3k
+    node: py3k-precise
 
 - job-template:
     name: 'gate-{name}-pypy'
@@ -136,7 +136,7 @@
       - test-results
       - console-log
 
-    node: precisepy3k
+    node: py3k-precise
 
 - job-template:
     name: 'gate-{name}-docs'

modules/openstack_project/files/zuul/layout.yaml

@@ -233,9 +233,6 @@ jobs:
   - name: ^(periodic|post)-mirror-python(26|27|33)$
     parameter-function: reusable_node
   # the salt-trigger worker has no jobs yet
-  # jobs run on the precisepy3k workers
-  - name: ^gate-.*-(python33|pypy)$
-    parameter-function: reusable_node
   - name: ^(gate|check)-requirements-integration-dsvm$
     branch: ^(?!stable/grizzly).*$
   - name: ^(gate|check)-tempest-dsvm-neutron-pg$