Remove unnecessary apt package installation

These packages aren't needed, so don't install them.

Change-Id: Ie48c7249bb4975aa3641e8f1c70f8df0fc623901

defaults/main.yml

@@ -115,11 +115,6 @@ ironic_bin: "{{ ironic_venv_bin }}"
 
 ironic_venv_download_url: http://127.0.0.1/venvs/untagged/ubuntu/ironic.tgz
 
-ironic_common_apt_packages:
-  - python-dev
-  - python-pip
-  - git
-
 ironic_requires_pip_packages:
   - virtualenv
   - virtualenv-tools
@@ -138,7 +133,6 @@ ironic_api_apt_packages:
 
 ironic_conductor_apt_packages:
   - libxml2-dev
-  - rabbitmq-server
   - syslinux
   - syslinux-common
   - libxslt1-dev

tasks/ironic_pre_install.yml

@@ -125,17 +125,3 @@
   tags:
     - ironic-api
     - ironic-conductor
-
-- name: Install common dependencies via apt
-  apt:
-    pkg: "{{ item }}"
-    state: latest
-  register: install_packages
-  until: install_packages|success
-  retries: 5
-  delay: 2
-  with_items: ironic_common_apt_packages
-  tags:
-    - ironic-install
-    - ironic-apt-packages
-