Add e2e test go work sum file

[TerryHowe]

What this PR does / why we need it:

Add this file or ignore it?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.09%. Comparing base (2aa005c) to head (e80fa63).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1412      +/-   ##
==========================================
- Coverage   85.14%   85.09%   -0.06%     
==========================================
  Files         107      107              
  Lines        3790     3790              
==========================================
- Hits         3227     3225       -2     
- Misses        336      338       +2     
  Partials      227      227              

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[qweeah]

I would vote to ignore it, since the module sum of E2E test workspace should be tracked by test/e2e/go.sum

[sajayantony]

Is there precedence in how other projects do this. I'm ok ignoring it but if this has some odd side effect of keeping or bringing unknown packages might move towards checkin this in.

[qweeah]

Is there precedence in how other projects do this

I do see kubernetes checks in the work sum file. But the usage is different. k8s' workspace is created on the root module level but ORAS' workspace is created on e2e test module level. So if we check go work sum file in, we are doing it for ORAS E2E test module, not for ORAS CLI module.

Besides from testing packages (Gomega and Ginkgo), ORAS E2E test module should rely on same version of packages used by ORAS CLI module. So go work sum file won't be needed for cross-module package version control, and thus no need to check it in.

[qweeah]

IMHO, the only advantage we don't ignore go work sum file is: we can clearly see a package version mismatch between CLI and E2E test module.