Install ARA in-repo

Until https://review.openstack.org/#/c/602461/ has merged, install
ARA using scripts in this repo. This can be reverted once OSA supports
externally triggering the ARA installation.

Change-Id: I75e3ea94953315addf9a075889d26909127be7d3

.zuul.d/playbooks-deploy/run.yml

@@ -6,6 +6,7 @@
   environment:
     SSH_AUTH_SOCK: "{{ ssh_agent_sock }}"
     ANSIBLE_VAULT_PASSWORD_FILE: "{{ vault_key_path }}"
+    LSN_RUN_ARA: true
   tasks:
     - name: Run the deploy job
       command: scripts/run_deploy.sh

scripts/functions.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+LSN_RUN_ARA="${LSN_RUN_ARA:-false}"
+
+# The vars used to prepare the Ansible runtime venv
+PIP_COMMAND="/opt/ansible-runtime/bin/pip"
+
+# NOTE(logan): Remove once https://review.openstack.org/#/c/602461/
+# has merged.
+function setup_ara {
+  # Install ARA and add it to the callback path provided by bootstrap-ansible.sh/openstack-ansible.rc
+  # This is added *here* instead of bootstrap-ansible so it's used for CI purposes only.
+  ARA_SRC_HOME="${HOME}/src/git.openstack.org/openstack/ara"
+  if [[ -d "${ARA_SRC_HOME}" ]]; then
+    # This installs from a git checkout
+    # PIP_COMMAND and PIP_OPTS are exported by the bootstrap-ansible script.
+    # PIP_OPTS contains the whole set of constraints that need to be applied.
+    ${PIP_COMMAND} install --isolated ${PIP_OPTS} ${ARA_SRC_HOME} "${ANSIBLE_PACKAGE:-ansible}"
+  else
+    # This installs from pypi
+    # PIP_COMMAND and PIP_OPTS are exported by the bootstrap-ansible script.
+    # PIP_OPTS contains the whole set of constraints that need to be applied.
+    ${PIP_COMMAND} install --isolated ${PIP_OPTS} ara "${ANSIBLE_PACKAGE:-ansible}"
+  fi
+  # Dynamically retrieve the location of the ARA callback so we are able to find
+  # it on both py2 and py3
+  ara_location=$(/opt/ansible-runtime/bin/python -c "import os,ara; print(os.path.dirname(ara.__file__))")
+  export ANSIBLE_CALLBACK_PLUGINS="/etc/ansible/roles/plugins/callback:${ara_location}/plugins/callbacks"
+}

scripts/run_deploy.sh

@@ -5,9 +5,15 @@ set -e
 export SCRIPT_PATH=$(dirname $(readlink -f "$0"))
 export PROJECT_PATH=$(dirname "$SCRIPT_PATH")
 
+source "${SCRIPT_PATH}/functions.sh"
+
 cp -R ${PROJECT_PATH}/openstack_deploy /etc
 pushd ${PROJECT_PATH}/openstack-ansible
 scripts/bootstrap-ansible.sh
+
+if [ "$LSN_RUN_ARA" == true ]; then
+    setup_ara
+fi
 popd
 
 pushd ${PROJECT_PATH}/openstack-ansible/playbooks