fix(sdk): Components - Fixed python components that use \n. Fixes #4939

[Ark-kun]

The escape sequence was being replaced by the echo command.

Apparently, unlike in the bash shell, the echo command of the sh shell expands the escape sequences by default and does not support an option to turn it off. (For some reason the -n option works properly even though it should not).

Fixes #4939

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[Bobgy]

/lgtm
thanks for the quick fix!

[Bobgy]

/lgtm

[k8s-ci-robot]

@Ark-kun: The following test failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
kubeflow-pipeline-sample-test	ff7c1fb	link	/test kubeflow-pipeline-sample-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[Bobgy]

It seems to be failing in multi_output sample
https://prow.k8s.io/view/gs/kubernetes-jenkins/pr-logs/pull/kubeflow_pipelines/4985/kubeflow-pipeline-sample-test/1349300154963857408#1:build-log.txt%3A4367

[google-oss-robot]

@Ark-kun: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
kubeflow-pipeline-e2e-test	ff7c1fb	link	/test kubeflow-pipeline-e2e-test
kubeflow-pipeline-sample-test	ff7c1fb	link	/test kubeflow-pipeline-sample-test
kubeflow-pipeline-upgrade-test	ff7c1fb	link	/test kubeflow-pipeline-upgrade-test
kubeflow-pipelines-tfx-python36	ff7c1fb	link	/test kubeflow-pipelines-tfx-python36

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.