engine : Dont set flowid in UI code

The frontend code should not set flowid
for reports webapp

Change-Id: I83fccc71cfac53b30a117628bb84e76947fef67b
Bug-Url: https://bugzilla.redhat.com/1116851
Signed-off-by: Ravi Nori <rnori@redhat.com>
(cherry picked from commit 2f5e6daf1174070d0677c9adb565bd7f90441a75)