Add a harprofiler docker container build

docker/build/harprofiler/Dockerfile

+# To build this Dockerfile:
+#
+# From the root of configuration:
+#
+# docker build -f docker/build/harprofiler/Dockerfile .
+#
+# This allows the dockerfile to update /edx/app/edx_ansible/edx_ansible
+# with the currently checked-out configuration repo.
+
+FROM edxops/trusty-common:latest
+MAINTAINER edxops
+
+ARG HARPROFILER_VERSION=master
+ARG REPO_OWNER=edx
+
+ADD . /edx/app/edx_ansible/edx_ansible
+
+WORKDIR /edx/app/edx_ansible/edx_ansible/docker/plays
+
+COPY docker/build/harprofiler/ansible_overrides.yml /
+RUN sudo /edx/app/edx_ansible/venvs/edx_ansible/bin/ansible-playbook harprofiler.yml \
+    -c local -i '127.0.0.1,' \
+    -t 'install' \
+    --extra-vars="@/ansible_overrides.yml" \
+    --extra-vars="HARPROFILER_VERSION=$HARPROFILER_VERSION" \
+    --extra-vars="COMMON_GIT_PATH=$REPO_OWNER"
+
+COPY docker/build/harprofiler/ansible_overrides.yml /
+RUN sudo /edx/app/edx_ansible/venvs/edx_ansible/bin/ansible-playbook harprofiler.yml \
+    -c local -i '127.0.0.1,' \
+    -t 'test:unit' \
+    --extra-vars="@/ansible_overrides.yml" \
+    --extra-vars="HARPROFILER_VERSION=$HARPROFILER_VERSION" \
+    --extra-vars="COMMON_GIT_PATH=$REPO_OWNER"
+
+USER root 

docker/build/harprofiler/ansible_overrides.yml

+---
+discovery_gunicorn_host: 0.0.0.0
+DISCOVERY_MYSQL: 'db'
+DISCOVERY_DJANGO_SETTINGS_MODULE: 'course_discovery.settings.devstack'
+DISCOVERY_ELASTICSEARCH_HOST: 'es'
+

docker/build/harprofiler/inventory

+[local]
+localhost

docker/plays/harprofiler.yml

+- name: Deploy HarProfiler
+  hosts: all
+  sudo: True
+  gather_facts: True
+  vars:
+    serial_count: 1
+  serial: "{{ serial_count }}"
+  roles:
+    - nginx
+    - harprofiler
+    - browsermob-proxy