fix(ci): added a missing path filter for e2e test

Author: lockwobr

.github/workflows/operator-ci.yaml

@@ -29,6 +29,7 @@ on:
       - operator/**
       - containers/operator.Dockerfile
       - .github/workflows/operator-ci.yaml
+      - k8s-tests/**
   push:
     branches:
       - main
@@ -38,6 +39,7 @@ on:
       - operator/**/*.go
       - containers/operator.Dockerfile
       - .github/workflows/operator-ci.yaml
+      - k8s-tests/**
 
 # NOTE: we may want to switch to matrix build for multi-platform support if this is taking too long
 # https://docs.docker.com/build/ci/github-actions/multi-platform/#distribute-build-across-multiple-runners