Add upgrade, restart-overnight-backups scripts for generic backup app

rattail_fabric2/deploy/backup/upgrade.sh.mako

@@ -0,0 +1,25 @@
+#!/bin/sh -e
+
+if [ "$1" = "-v" -o "$1" = "--verbose" ]; then
+    VERBOSE='--verbose'
+    QUIET=
+else
+    VERBOSE=
+    QUIET='--quiet'
+fi
+
+PIP="sudo -H -u ${user} PIP_CONFIG_FILE=${envpath}/pip.conf ${envpath}/bin/pip"
+
+
+# upgrade pip
+$PIP install $QUIET --upgrade pip
+
+# upgrade rattail
+cd ${envpath}/src/rattail
+if [ "$(sudo -H -u ${user} git status --porcelain)" != '' ]; then
+   sudo -H -u ${user} git status
+   exit 1
+fi
+sudo -H -u ${user} git pull $QUIET
+find . -name '*.pyc' -delete
+$PIP install $QUIET --upgrade --upgrade-strategy eager --editable .