[CLI] Support passing of Service Account to tkn-results

[khrm]

The User can pass the flag --sa for serviceaccount name and --sa-ns for serviceaccount namespace. Latter is optional. If not given, then the namespace from the current context is assumed.

Fixes #576

Changes

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Release Notes

The User can pass the flag --sa for serviceaccount name and --sa-ns for serviceaccount namespace. Latter is optional. If not given, then the namespace from the current context is assumed.

[khrm]

/kind feature

[khrm]

@enarha @avinal @sayan-biswas @adambkaplan Can you review this asap? Part of milestone v0.8.0

[khrm]

All flags seem to be broken in the main.

[khrm]

@avinal Can you test this pr now?

[khrm]

@enarha @sayan-biswas Let's merge this pr also. @avinal Tested this.

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[enarha]

/lgtm