Adding missing ironic source install file

Apparently this file was missed on a previous commit, adding.

playbooks/roles/ironic-install/tasks/ironic_source_download.yaml

@@ -0,0 +1,22 @@
+# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+- name: "Downloading Ironic"
+  command: git clone https://git.openstack.org/openstack/ironic chdir=/opt/stack creates=/opt/stack/ironic
+- name: "Ironic - checking out master branch"
+  command: git checkout -f master chdir=/opt/stack/ironic
+- name: "Ironic - resetting master branch"
+  command: git reset --hard master chdir=/opt/stack/ironic
+- name: "Ironic - resyncing to current master branch"
+  command: git pull --ff-only chdir=/opt/stack/ironic/