Add Fedora 21 dib image

Add dib image-build for Fedora 21.  This passes config validation in
I250ea4959740cfc4650e9057caba09ae7bc25768 and has fixed the issues
that lead to I2671e05e44b8a311f00dec024e67cbdc2864185c (there is no
need to specify the path to the image as done in that change, d-i-b
inbuilt paths + some redirects on the upstream server get you to the
right image now)

Change-Id: I197312214d6e849f2047363a51b1c71829982743

modules/openstack_project/templates/nodepool/nodepool.yaml.erb

@@ -188,6 +188,16 @@ labels:
       - name: hpcloud-b3
       - name: hpcloud-b4
       - name: hpcloud-b5
+  - name: devstack-fedora21-dib
+    image: devstack-fedora21-dib
+    ready-script: configure_mirror.sh
+    min-ready: 1
+    providers:
+      - name: hpcloud-b1
+      - name: hpcloud-b2
+      - name: hpcloud-b3
+      - name: hpcloud-b4
+      - name: hpcloud-b5
   - name: tripleo-precise
     image: tripleo-precise
     min-ready: 8
@@ -513,6 +523,12 @@ providers:
         diskimage: devstack-centos7-dib
         username: jenkins
         private-key: /home/nodepool/.ssh/id_rsa
+      - name: devstack-fedora21-dib
+        min-ram: 30720
+        diskimage: devstack-fedora21-dib
+        username: jenkins
+        private-key: /home/nodepool/.ssh/id_rsa
+
   - name: hpcloud-b2
     region-name: 'region-b.geo-1'
     service-type: 'compute'
@@ -597,6 +613,11 @@ providers:
         diskimage: devstack-centos7-dib
         username: jenkins
         private-key: /home/nodepool/.ssh/id_rsa
+      - name: devstack-fedora21-dib
+        min-ram: 30720
+        diskimage: devstack-fedora21-dib
+        username: jenkins
+        private-key: /home/nodepool/.ssh/id_rsa
   - name: hpcloud-b3
     region-name: 'region-b.geo-1'
     service-type: 'compute'
@@ -681,6 +702,11 @@ providers:
         diskimage: devstack-centos7-dib
         username: jenkins
         private-key: /home/nodepool/.ssh/id_rsa
+      - name: devstack-fedora21-dib
+        min-ram: 30720
+        diskimage: devstack-fedora21-dib
+        username: jenkins
+        private-key: /home/nodepool/.ssh/id_rsa
   - name: hpcloud-b4
     region-name: 'region-b.geo-1'
     service-type: 'compute'
@@ -766,6 +792,11 @@ providers:
         diskimage: devstack-centos7-dib
         username: jenkins
         private-key: /home/nodepool/.ssh/id_rsa
+      - name: devstack-fedora21-dib
+        min-ram: 30720
+        diskimage: devstack-fedora21-dib
+        username: jenkins
+        private-key: /home/nodepool/.ssh/id_rsa
   - name: hpcloud-b5
     region-name: 'region-b.geo-1'
     service-type: 'compute'
@@ -852,6 +883,11 @@ providers:
         diskimage: devstack-centos7-dib
         username: jenkins
         private-key: /home/nodepool/.ssh/id_rsa
+      - name: devstack-fedora21-dib
+        min-ram: 30720
+        diskimage: devstack-fedora21-dib
+        username: jenkins
+        private-key: /home/nodepool/.ssh/id_rsa
   - name: tripleo-test-cloud-hp1
     service-type: 'compute'
     service-name: 'nova'
@@ -1018,3 +1054,16 @@ diskimages:
       TMPDIR: /opt/dib_tmp
       DIB_IMAGE_CACHE: /opt/dib_cache
       QEMU_IMG_OPTIONS: compat=0.10
+  - name: devstack-fedora21-dib
+    elements:
+      - fedora
+      - vm
+      - openstack-repos
+      - puppet
+      - nodepool-base
+      - node-devstack
+    release: 21
+    env-vars:
+      TMPDIR: /opt/dib_tmp
+      DIB_IMAGE_CACHE: /opt/dib_cache
+      QEMU_IMG_OPTIONS: compat=0.10