temporary update script

Until we get proper software updates working we need a script we can run
to orchestrate installs -- checkouts, collectstatic, restarts.  Tagged
with the "update" tag.  Just puts the file out there for now, doesn't
actually do any updates, that should be done with something like this:
    ansible GROUPNAME -i ./ec2.py -c ssh -s -a edx-update.sh

playbooks/roles/common/files/edx-update.sh

+#!/bin/bash
+
+function usage() {
+    echo "update.sh [cms|lms|all|none]"
+    echo "    option is what services to collectstatic and restart (default=all)"
+}
+
+if [ $# -gt 1 ]; then
+    usage
+    exit 1
+fi
+
+if [ $# == 0 ]; then
+    do_CMS=1
+    do_LMS=1
+else
+    case $1 in
+        cms)
+            do_CMS=1
+            ;;
+        lms)
+            do_LMS=1
+            ;;
+        both|all)
+            do_CMS=1
+            do_LMS=1
+            ;;
+        none)
+            ;;
+        *)
+            usage
+            exit 1
+            ;;
+    esac
+fi
+
+function run() {
+    echo
+    echo "======== $@"
+    $@
+}
+
+source /etc/profile
+source /opt/edx/bin/activate
+export PATH=$PATH:/opt/www/.gem/bin
+
+cd /opt/wwc/mitx
+
+BRANCH="origin/feature/edx-west/stanford-theme"
+
+export GIT_SSH="/tmp/git_ssh.sh"
+run git remote update
+run git checkout $BRANCH
+
+if [[ $do_CMS ]]; then
+    export SERVICE_VARIANT=cms
+    run rake cms:gather_assets:aws
+    run sudo restart cms
+fi
+
+if [[ $do_LMS ]]; then
+    export SERVICE_VARIANT=lms
+    run rake lms:gather_assets:aws
+    run sudo restart lms
+fi
+

playbooks/roles/common/tasks/main.yml

@@ -51,3 +51,4 @@
   tags:
   - pre_install
 
+- include: software_update.yml

playbooks/roles/common/tasks/software_update.yml

+---
+- name: edx-update.sh, manual lms/cms update script
+  copy: src=roles/common/files/edx-update.sh dest=/usr/local/bin/edx-update.sh owner=ubuntu group=adm mode=0775
+  tags:
+  - update