fix(sdk): add default labels for caching (kubeflow#1078)

Author: Tomcli

sdk/python/kfp_tekton/compiler/compiler.py

@@ -137,8 +137,8 @@ def __init__(self, **kwargs):
     self.custom_task_crs = []
     self.uuid = self._get_unique_id_code()
     self._group_names = []
-    self.pipeline_labels = {}
-    self.pipeline_annotations = {}
+    self.pipeline_labels = {'pipelines.kubeflow.org/pipelinename': '', 'pipelines.kubeflow.org/generation': ''}
+    self.pipeline_annotations = {'tekton.dev/template': ''}
     self.tekton_inline_spec = True
     self.resource_in_separate_yaml = False
     self.produce_taskspec = True

sdk/python/tests/compiler/testdata/basic_no_decorator.yaml

@@ -27,11 +27,15 @@ metadata:
     tekton.dev/artifact_items: '{"exit-handler": [], "frequent-word": [["word", "$(results.word.path)"]],
       "save-message": []}'
     sidecar.istio.io/inject: "false"
+    tekton.dev/template: ''
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"description": "Get Most Frequent Word
       and Save to GCS", "inputs": [{"default": "When flies fly behind flies", "name":
       "message"}, {"default": "default_output", "name": "outputpath"}], "name": "Save
       Most Frequent Word"}'
+  labels:
+    pipelines.kubeflow.org/pipelinename: ''
+    pipelines.kubeflow.org/generation: ''
 spec:
   params:
   - name: message

sdk/python/tests/compiler/testdata/compose.yaml

@@ -30,11 +30,15 @@ metadata:
     tekton.dev/artifact_items: '{"download": [["downloaded", "$(results.downloaded.path)"]],
       "get-frequent": [["word", "$(results.word.path)"]], "save": []}'
     sidecar.istio.io/inject: "false"
+    tekton.dev/template: ''
     pipelines.kubeflow.org/big_data_passing_format: $(workspaces.$TASK_NAME.path)/artifacts/$ORIG_PR_NAME/$TASKRUN_NAME/$TASK_PARAM_NAME
     pipelines.kubeflow.org/pipeline_spec: '{"description": "Download and Get Most
       Frequent Word and Save to GCS", "inputs": [{"default": "gs://ml-pipeline-playground/shakespeare1.txt",
       "name": "url", "optional": true, "type": "String"}, {"default": "/tmp/output.txt",
       "name": "outputpath", "optional": true, "type": "String"}], "name": "download-and-save-most-frequent"}'
+  labels:
+    pipelines.kubeflow.org/pipelinename: ''
+    pipelines.kubeflow.org/generation: ''
 spec:
   params:
   - name: outputpath