Add experimental Fedora 21 devstack job

Add an experimental devstack f21 job as the first step in bringing up
Fedora 21.

As requested condense this into a job-template for the fedora jobs.
Also add the node matching update; this is kept as a separate regex to
help it show up when grepping.

Change-Id: If084c2cbf058c9adbe0cb706559711a9f3959aa4
Depends-on: If764f676f43c86830b4277adaaf71098e9d4140b

jenkins/jobs/devstack-gate.yaml

@@ -1445,9 +1445,9 @@
       - devstack-logs
       - console-log
 
-- job:
-    name: 'check-tempest-dsvm-f20'
-    node: 'devstack-f20'
+- job-template:
+    name: '{pipeline}-tempest-dsvm-f{fedora-release}'
+    node: '{node}'
 
     wrappers:
       - build-timeout:

jenkins/jobs/projects.yaml

@@ -1785,7 +1785,15 @@
           node: devstack-precise-dib
           branch-designator: '-icehouse-dibtest'
           branch-override: stable/icehouse
-
+      # fedora jobs
+      - '{pipeline}-tempest-dsvm-f{fedora-release}':
+          pipeline: check
+          fedora-release: 20
+          node: devstack-f20
+      - '{pipeline}-tempest-dsvm-f{fedora-release}':
+          fedora-release: 21
+          pipeline: check
+          node: devstack-f21
 
 - project:
     name: hacking

zuul/layout.yaml

@@ -595,6 +595,9 @@ jobs:
   - name: check-tempest-dsvm-f20
     branch: ^(?!stable)
     voting: false
+  - name: check-tempest-dsvm-f21
+    branch: ^(?!stable)
+    voting: false
   - name: check-tempest-dsvm-centos7
     branch: ^(?!stable/icehouse).*$
     voting: false
@@ -2940,6 +2943,7 @@ projects:
       - check-tempest-dsvm-cells
       - check-tempest-dsvm-mongodb-zaqar
       - gate-grenade-dsvm-forward
+      - check-tempest-dsvm-f21
 
   - name: openstack-dev/devstack-vagrant
     template:

zuul/openstack_functions.py

@@ -93,6 +93,7 @@ def set_node_options(item, job, params, default):
     python26_re = r'^.*-(py(thon)?)?26.*$'
     centos6_re = r'^.*-centos6.*$'
     f20_re = r'^.*-f20.*$'
+    f21_re = r'^.*-f21.*$'
     python33_re = r'^.*-(py(thon)?33|33).*$'
     tripleo_re = r'^.*-tripleo.*$'
     devstack_re = r'^.*-dsvm.*$'
@@ -112,6 +113,10 @@ def set_node_options(item, job, params, default):
     elif re.match(f20_re, job.name):
         # Pass because job specified label is always correct.
         pass
+    # Jobs needing fedora 21
+    elif re.match(f21_re, job.name):
+        # Pass because job specified label is always correct.
+        pass
     # Jobs needing py33/pypy slaves
     elif re.match(python33_re, job.name):
         # Pass because job specified label is always correct.