Bug description

When using the demo profile which has trace sampling 100% configured, I'm not seeing any trace spans from my req in jaeger. The only trace spans I saw are from user Prometheus, nothing from my browsers.

Affected product area (please put an X in all that apply)

[ ] Configuration Infrastructure
[ ] Docs
[ ] Installation
[ ] Networking
[ ] Performance and Scalability
[ x] Policies and Telemetry
[ ] Security
[ ] Test and Release
[ ] User Experience
[ ] Developer Infrastructure

Expected behavior
See correlated trace spans for each request

Steps to reproduce the bug

Deploy an app that worked in 1.2, then move to 1.3 rc 3.

I believe @brianavery also tried book info and hit the same issue.

Version (include the output of istioctl version --remote and kubectl version)
1.3 RC 3

How was Istio installed?
demo profile

Environment where bug was observed (cloud vendor, OS, etc)
IBM Cloud KS.