Install awsudo on Strider

Summary:
This isn't the most elegant way to manage what's installed on Strider,
but it will work for now. Having awsudo on Strider will allow us to do
`awsudo gbox`, allowing Vagrant to use IAM profiles (ref T142) which it
would not otherwise know to do.

Test Plan:
Ran this in a branch without the conditionals. The resulting
installation worked well enough for @marc to deploy geo-service with
`awsudo gbox go [...]`

Reviewers: #developers, marc

Reviewed By: marc

Subscribers: marc

Maniphest Tasks: T142

Differential Revision: https://phabricator.paperg.com/D154

Author: Phil Frost

strider-custom.json

@@ -0,0 +1,3 @@
+{
+    "test": "strider/install"
+}

strider/install

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Install awsudo on Strider.
+
+set -e
+
+venv="/usr/local/awsudo"
+
+if [[ "$STRIDER_REPO_DOMAIN" == 'master.paperg.awsudo' ]]; then
+    [[ ! -d "$venv" ]] && sudo virtualenv "$venv"
+    sudo "${venv}/bin/pip" install --upgrade .
+    [[ ! -e /usr/local/bin/awsudo ]] && sudo ln -s "${venv}/bin/awsudo" /usr/local/bin/awsudo
+    [[ ! -e /usr/local/bin/awsrotate ]] && sudo ln -s "${venv}/bin/awsrotate" /usr/local/bin/awsrotate
+    exit 0
+fi