use the correct informer/lister pair

[vaikas]

Same as: knative/eventing#4296

[knative-prow-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vaikas

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [vaikas]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov]

Codecov Report

Merging #123 into master will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #123   +/-   ##
=======================================
  Coverage   75.88%   75.88%           
=======================================
  Files          24       24           
  Lines        1377     1377           
=======================================
  Hits         1045     1045           
  Misses        253      253           
  Partials       79       79           

Impacted Files	Coverage Δ
pkg/reconciler/trigger/controller.go	63.82% <100.00%> (ø)
pkg/reconciler/trigger/trigger.go	78.91% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3bbdd7a...d6f2a85. Read the comment docs.

[mattmoor]

/lgtm