Refactor setup_env.sh to use virtualenvs

Rather than relying on system-wide packages, just
create the virtualenv and leverage the already available
requirements.txt, which installs ansible along with other
dependencies.
Also pull the openstack inventory in the local inventory folder
as ansible pip package does not bundle the inventory utility.

Change-Id: I43b1c3fce522657854cdc20c55bd32366179b4b7

.gitignore

@@ -1,3 +1,4 @@
+venv/
 infra_config.yml
-openstack.py
+inventory/openstack.py
 .tox

README.md

@@ -1,8 +1,7 @@
 Instructions
 ============
 
-1. Run ``bash setup_env.sh``
-2. Run ``source /opt/stack/ansible/hacking/env-setup``
+1. Run ``source setup_env.sh``
 3. Source your OpenStack cloud environment variables rc file
 3. Run ``cp infra_config.yml.sample infra_config.yml``
 4. Edit infra_config.yml and put your environment values

run.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 ansible-playbook -i hosts provision_infra_servers.yml -e "@infra_config.yml"
-ansible-playbook -i /opt/stack/ansible/contrib/inventory/openstack.py site.yml -e "@infra_config.yml"
+ansible-playbook -i inventory/openstack.py site.yml -e "@infra_config.yml"

setup_env.sh

@@ -1,53 +1,21 @@
 #!/bin/bash
-set -e
 
-if [ -x '/usr/bin/apt-get' ]; then
-    if ! $(git --version &>/dev/null) ; then
-        sudo -H apt-get -y install git
-    fi
-    if ! $(pip -v &>/dev/null); then
-        sudo -H apt-get -y install python-pip
-    fi
-elif [ -x '/usr/bin/yum' ]; then
-    if ! $(git --version &>/dev/null); then
-        sudo -H yum -y install git
-    fi
-    if ! $(pip -v &>/dev/null); then
-        sudo -H yum -y install python-pip
-    fi
-else
-    echo "ERROR: Supported package manager not found.  Supported: apt,yum"
+# Install virtualenv package if not installed
+if [ ! -f /usr/bin/pip ]; then
+    sudo -E apt-get install python-pip
 fi
 
-sudo -E pip install -r "$(dirname $0)/requirements.txt"
+# Create infra-ansible virtual environment
+pip install virtualenv
+virtualenv venv
+source venv/bin/activate
+pip install -r requirements.txt
 
-u=$(whoami)
-g=$(groups | awk '{print $1}')
-
-if [ ! -d /opt/stack ]; then
-    mkdir -p /opt/stack || (sudo mkdir -p /opt/stack)
-fi
-sudo -H chown -R $u:$g /opt/stack
-cd /opt/stack
-
-if [ ! -d ansible ]; then
-    git clone https://github.com/ansible/ansible.git --recursive
-else
-    cd ansible
-    git checkout devel
-    git pull --rebase
-    git submodule update --init --recursive
-    git fetch
-    # Temporary direct checkout of devel due to broken modules until
-    # the submodules pointers get updated in the core ansible repo.
-    cd lib/ansible/modules/core
-    git checkout devel
+# Create inventory folder
+if [ ! -d inventory ]; then
+    mkdir inventory
 fi
 
-echo
-echo "If your using this script directly, execute the"
-echo "following commands to update your shell."
-echo
-echo "source env-vars"
-echo "source /opt/stack/ansible/hacking/env-setup"
-echo
+# Install Ansible openstack inventory
+/usr/bin/wget -N https://raw.githubusercontent.com/ansible/ansible/devel/contrib/inventory/openstack.py -O inventory/openstack.py
+chmod +x inventory/openstack.py