WIP: (TEP 0097) debug: breakpoint after,before step execution

[waveywaves]

Changes

breakpoint_on_failure runs at the end of a step, this
commit adds a manual breakpoint -breakpoint_after to run after the step ends whether it
fails or not. The checks for this have been added in the same place as breakpoint on failure

breakpoint_before sets a breakpoint before the entrypointer runs the command

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
• Has Tests included if any functionality added or changed
• Follows the commit message standard
• Meets the Tekton contributor standards (including functionality, content, code)
• Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings). See some examples of good release notes.
• Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

NONE

cc @vdemeester

[tekton-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage-df to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/pod/entrypoint.go	94.1%	94.2%	0.1

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/pod/entrypoint.go	94.1%	94.2%	0.1

[waveywaves]

/kind tep

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
cmd/entrypoint/main.go	11.6%	11.4%	-0.2
pkg/pod/entrypoint.go	94.1%	92.4%	-1.7

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage-df to re-run this coverage report

File	Old Coverage	New Coverage	Delta
cmd/entrypoint/main.go	11.6%	11.4%	-0.2
pkg/pod/entrypoint.go	94.1%	92.4%	-1.7

[tekton-robot]

@waveywaves: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-tekton-pipeline-unit-tests	e124583	link	true	/test pull-tekton-pipeline-unit-tests
pull-tekton-pipeline-build-tests	e124583	link	true	/test pull-tekton-pipeline-build-tests

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