Story (Required)

As a QE I want not only verify that shipped task "tkn" works but also that it contains the CLI is desired version

Background (Required)

We have some tests for tkn and tkn-pac in https://github.com/openshift-pipelines/release-tests/blob/master/specs/ecosystem/ecosystem.spec#L104-L156

These run command "tkn version" and "tkn-pac version" but don't do anything with the results

Approach (Required)

Update the test to actually process the output and compare it to the expected values defined in https://github.com/openshift-pipelines/release-tests/blob/master/env/default/default.properties#L45-L56