Add pipeline version information

[chmouel]

Add pipeline service version information to tkn pipeline version. The logic
has been imported from dashboard https://git.io/JvC4h

I don't have a full test for it, since the machinery to fake a Deployment is
quite tedious to import/implement and this is not used anywhere else.

Moved the version tests to use golden

Closes #463

Changes

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Release Notes

release-note

[chmouel]

/cc @waveywaves

[tekton-robot]

@chmouel: GitHub didn't allow me to request PR reviews from the following users: waveywaves.

Note that only tektoncd members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

/cc @waveywaves

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[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-cli-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/cmd/version/version.go	73.6%	76.3%	2.7

[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-cli-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/cmd/version/version.go	73.6%	76.3%	2.7

[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-cli-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/cmd/version/version.go	73.6%	76.3%	2.7

[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-cli-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/cmd/version/version.go	73.6%	76.3%	2.7

[waveywaves]

Tested this out against a 1.10.1 release, works great !

$ tkn version
Client version: dev
Server version: v0.10.1

if tekton-pipelines namespace doesn't exist

$ tkn version
Client version: dev
Server version: unknown

[chmouel]

@waveywaves and for completion, it would not show anything if it can't connect and get the server information.

[danielhelfand]

Just minor detail noted below. I also tested with earlier version (0.9.2), and works great!

[tekton-robot]

The following is the coverage report on pkg/.
Say /test pull-tekton-cli-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/cmd/version/version.go	73.6%	76.3%	2.7

[vdemeester]

/lgtm
/meow

[tekton-robot]

@vdemeester:

In response to this:

/lgtm
/meow

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.

[tekton-robot]

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