When CLI changes, we also re-run K8S tests (apache#13305)

Since K8S tests use Airflow CLI (via Helm Chart) we should
also run the K8S tests when CLI changes.

Fixes apache#12780

PULL_REQUEST_WORKFLOW.rst

@@ -154,7 +154,8 @@ The logic implemented for the changes works as follows:
       modifications to any Python code occurs. Example test of this type is verifying proper structure of
       the project including proper naming of all files.
    b) if any of the Airflow API files changed we enable ``API`` test type
-   c) if any of the Airflow CLI files changed we enable ``CLI`` test type
+   c) if any of the Airflow CLI files changed we enable ``CLI`` test type and Kubernetes tests (the
+      K8S tests depend on CLI changes as helm chart uses CLI to run Airflow).
    d) if any of the Provider files changed we enable ``Providers`` test type
    e) if any of the WWW files changed we enable ``WWW`` test type
    f) if any of the Kubernetes files changed we enable ``Kubernetes`` test type

scripts/ci/selective_ci_checks.sh

@@ -536,9 +536,10 @@ function calculate_test_types_to_run() {
         fi
         if [[ ${COUNT_CLI_CHANGED_FILES} != "0" ]]; then
             echo
-            echo "Adding CLI to selected files as ${COUNT_CLI_CHANGED_FILES} CLI files changed"
+            echo "Adding CLI and Kubernetes (they depend on CLI) to selected files as ${COUNT_CLI_CHANGED_FILES} CLI files changed"
             echo
             SELECTED_TESTS="${SELECTED_TESTS} CLI"
+            kubernetes_tests_needed="true"
         fi
         if [[ ${COUNT_PROVIDERS_CHANGED_FILES} != "0" ]]; then
             echo