feat(main): Armada as a plugin

Added in functionality that allows users to use access armada as a plugin for helm.

Closes 164 https://github.com/att-comdev/armada/issues/164

Change-Id: I6f43d373155454c713bff90977b1551357f22abe

controller.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+clean_container(){
+    echo "Destroying $1 container..."
+    docker stop $1 >/dev/null
+    docker rm $1 >/dev/null
+    echo "...container destroyed"
+}
+
+readlink(){
+  (
+  cd $(dirname $1)
+  echo $PWD/$(basename $1)
+  )
+}
+
+# Check to see if the aramada container exists
+if [ -n "$( sudo docker ps -a | grep quay.io/attcomdev/armada )" ]; then
+  echo "Armada container already exists..."
+  clean_container armada
+fi
+
+# Check to see if the user is trying to apply a chart
+if [ $1 = "apply" ]; then
+  # TODO Handle erroneous or missing inputs
+  # Bring up a new armada container with passed in yaml mounted to the container
+  echo "Creating an Armada container..."
+  docker run -d --net host -p 8000:8000 --name armada  -v $(readlink $(dirname $2)):$(readlink $(dirname $2)) -v ~/.kube/config:/armada/.kube/config -v ~/.kube/plugins/armada/examples/:/examples quay.io/attcomdev/armada:latest
+  docker exec armada armada apply $(readlink $2)
+else
+  # For any other command the chart does not need to be mounted to the container
+  # Bring up a new armada container
+  echo "Creating an Armada container..."
+  docker run -d --net host -p 8000:8000 --name armada -v ~/.kube/config:/armada/.kube/config -v ~/.kube/plugins/armada/examples/:/examples quay.io/attcomdev/armada:latest
+  docker exec armada armada "$@"
+fi
+clean_container armada
+

docs/source/operations/guide-helm-plugin.rst

@@ -0,0 +1,23 @@
+Armada Plugin
+============
+
+The armada plugin extends all the functionality of Armada to be used as a plugin with Helm.
+
+Install Plugin
+---------------
+::
+
+    To install the Armada plugin, all you have to do is copy the plugin directory into ~/.helm/plugins/
+
+.. code-block:: bash
+
+    git clone https://github.com/att-comdev/armada.git ~/.helm/plugins/
+
+Usage
+------
+
+**helm <Name> <action> [options]**
+::
+
+    helm armada tiller --status
+    helm armada apply ~/.helm/plugins/armada/examples/simple.yaml

plugin.yaml

@@ -0,0 +1,11 @@
+name: "armada"
+version: "0.0.3"
+usage: "Manages multiple helm charts with a centralized armada yaml"
+description: |-
+  This plugin provides helm access to armada. A tool for managing multiple helm charts with dependencies by centralizing all configurations in a single Armada yaml and providing lifecycle hooks for all helm releases
+  usage:
+    $ helm armada tiller --status
+    $ helm armada apply /examples/openstack-helm.yaml
+ignoreFlags: false
+useTunnel: false
+command: "sh $HELM_PLUGIN_DIR/controller.sh"