Move ironic pip install into it's own path

This PR fixes the installation of pip packages for ironic so that we
correctly install python-ironicclient when using ironic, and not when
using kvm.

Change-Id: I829921fb6ff2266cc5293017b290d84573516065

defaults/main.yml

@@ -404,6 +404,8 @@ nova_requires_pip_packages:
 
 nova_compute_pip_packages:
   - libvirt-python
+
+nova_compute_ironic_pip_packages:
   - python-ironicclient
 
 # Common pip packages

tasks/nova_compute.yml

@@ -22,6 +22,9 @@
 - include: nova_compute_lxd.yml
   when: nova_virt_type == 'lxd'
 
+- include: nova_compute_ironic.yml
+  when: nova_virt_type == 'ironic'
+
 - include: nova_compute_key_populate.yml
 
 - include: nova_compute_key_distribute.yml

tasks/nova_compute_ironic.yml

@@ -0,0 +1,29 @@
+---
+# Copyright 2016, Walmart Stores, Inc.
+#
+# 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: Install pip packages (venv)
+  pip:
+    name: "{{ nova_compute_ironic_pip_packages | join(' ') }}"
+    state: latest
+    virtualenv: "{{ nova_bin | dirname }}"
+    virtualenv_site_packages: "no"
+    extra_args: "{{ pip_install_options_fact|default('') }}"
+  register: install_packages
+  until: install_packages|success
+  retries: 5
+  delay: 2
+  tags:
+    - nova-install
+    - nova-pip-packages