ci: use valid pipelineruns in tekton-kueue tests (#9531)

Tekton-kueue expects all pipelineruns it processes to be valid (as
defined by upstream tekton).  Unfortunately, some of the pipelineruns
used in the tests in this repository don't meet that requirement.
Update them to be valid.

This will enable #9393 to merge, since it's blocked on this issue.

Fixes: KFLUXINFRA-2652

Signed-off-by: Andy Sadler <[email protected]>

Author: sadlerap

hack/test-tekton-kueue-config.py

@@ -276,6 +276,7 @@ def check_prerequisites(should_print: bool = True) -> Dict[str, TestConfig]:
             },
             "spec": {
                 "pipelineSpec": {
+                    "description": "foo", # a completely empty pipelineSpec is not allowed
                     "tasks": None,
                 },
                 "workspaces": [{"name": "shared-workspace", "emptyDir": {}}]
@@ -304,6 +305,7 @@ def check_prerequisites(should_print: bool = True) -> Dict[str, TestConfig]:
             },
             "spec": {
                 "pipelineSpec": {
+                    "description": "foo", # a completely empty pipelineSpec is not allowed
                     "tasks": [],
                 },
                 "workspaces": [{"name": "shared-workspace", "emptyDir": {}}]
@@ -603,7 +605,6 @@ def check_prerequisites(should_print: bool = True) -> Dict[str, TestConfig]:
                 }
             },
             "spec": {
-                "pipelineRef": {"name": "build-pipeline"},
                 "params": [
                     {
                         "name": "build-platforms",