Remove persistentVolumeClaim by volumeClaimTemplate

[fenglixa]

Which issue is resolved by this Pull Request:
Resolves #181

Description of your changes:
Remove persistentVolumeClaim by volumeClaimTemplate, since we already used the Tekton version > 0.12
Environment tested:

(.venv)  fengli@fenglis-MacBook-Pro  ~/go/src/github.com/kubeflow/kfp-tekton/sdk/python/tests   remove_pvc  kc get po |grep file
file-passing-pipelines-gen-params-mv8h8-pod-hqhnv         0/1     Completed   0          2d13h
file-passing-pipelines-print-params-25vkf-pod-zvpsm       0/1     Completed   0          2d13h
file-passing-pipelines-print-text-2-qsccx-pod-s5fkx       0/1     Completed   0          2d13h
file-passing-pipelines-print-text-3-xj69j-pod-mxvl8       0/1     Completed   0          2d13h
file-passing-pipelines-print-text-4-kfnr7-pod-9rfxq       0/1     Completed   0          2d13h
file-passing-pipelines-print-text-5-l9snc-pod-jtbhc       0/1     Completed   0          2d13h
file-passing-pipelines-print-text-dclrj-pod-w9lfj         0/1     Completed   0          2d13h
file-passing-pipelines-repeat-line-x45z5-pod-44lbv        0/1     Completed   0          2d13h
file-passing-pipelines-split-text-lines-crb4d-pod-hjdw7   0/2     Completed   0          2d13h
file-passing-pipelines-sum-numbers-fpdvm-pod-kq6r7        0/1     Completed   0          2d13h
file-passing-pipelines-write-numbers-6w9rb-pod-f8tx5      0/1     Completed   0          2d13h
(.venv)  fengli@fenglis-MacBook-Pro  ~/go/src/github.com/kubeflow/kfp-tekton/sdk/python/tests   remove_pvc  tkn pr describe file-passing-pipelines
Name:        file-passing-pipelines
Namespace:   feng-test
Timeout:     1h0m0s
Labels:
 tekton.dev/pipeline=file-passing-pipelines

🌡️  Status

STARTED      DURATION    STATUS
2 days ago   2 minutes   Succeeded

📦 Resources

 No resources

⚓ Params

 No params

🗂  Taskruns

 NAME                                              TASK NAME          STARTED      DURATION     STATUS
 ∙ file-passing-pipelines-print-text-5-l9snc       print-text-5       2 days ago   6 seconds    Succeeded
 ∙ file-passing-pipelines-print-text-3-xj69j       print-text-3       2 days ago   10 seconds   Succeeded
 ∙ file-passing-pipelines-print-text-2-qsccx       print-text-2       2 days ago   1 minute     Succeeded
 ∙ file-passing-pipelines-print-text-4-kfnr7       print-text-4       2 days ago   13 seconds   Succeeded
 ∙ file-passing-pipelines-sum-numbers-fpdvm        sum-numbers        2 days ago   15 seconds   Succeeded
 ∙ file-passing-pipelines-print-text-dclrj         print-text         2 days ago   1 minute     Succeeded
 ∙ file-passing-pipelines-print-params-25vkf       print-params       2 days ago   1 minute     Succeeded
 ∙ file-passing-pipelines-write-numbers-6w9rb      write-numbers      2 days ago   15 seconds   Succeeded
 ∙ file-passing-pipelines-gen-params-mv8h8         gen-params         2 days ago   11 seconds   Succeeded
 ∙ file-passing-pipelines-split-text-lines-crb4d   split-text-lines   2 days ago   22 seconds   Succeeded
 ∙ file-passing-pipelines-repeat-line-x45z5        repeat-line        2 days ago   14 seconds   Succeeded

[kubeflow-bot]

This change is 

[fenglixa]

@Tomcli , Thanks for your comments, I addressed it just now. is it OK for you now? Thanks!

[Tomcli]

Thanks @fenglixa, we need to document this along with updating the samples you have. But those can be done in a separate PR.
/lgtm

[Tomcli]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Tomcli

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