demo script updates (#934)

Demo script updates.  Record-replay, a bugfix in the canary demo script, etc.

demos/record-replay/cleanup.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+fission fn delete --name hi-py
+fission route delete --name $(fission route list|grep hi|cut -f1 -d' ')
+fission recorder delete --name my-recorder
+kubectl -n fission delete pod redis-0

demos/record-replay/hi.py

@@ -0,0 +1,7 @@
+from flask import request
+from flask import current_app
+
+
+def main():
+   name=request.args["name"]
+   return "Hello, %s" % name

demos/record-replay/run.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+DEMO_RUN_FAST=1
+ROOT_DIR=$(dirname $0)/..
+. $ROOT_DIR/util.sh
+
+desc "A simple function that takes inputs"
+run "cat hi.py"
+
+desc "Set up function"
+run "fission function create --name hi-py --env python --code hi.py --entrypoint hi.main"
+
+desc "Set up route"
+run "fission route create --function hi-py --url /hi --method GET"
+
+desc "Set up recorder"
+run "fission recorder create --name my-recorder --function hi-py"
+
+desc "Run function"
+run "curl http://$FISSION_ROUTER/hi?name=world"
+
+desc "View recording"
+run "fission records view -v"
+
+requid=$(fission records view -v|tail -1|cut -f1 -d' ')
+
+desc "Replay recording"
+run "fission replay --reqUID $requid"