feat: add Public-Viewer support

[filariow]

This PR adds support for Public-Viewer into proxy as described in JIRA ASC-532

Supersedes #417

Linked to: codeready-toolchain/toolchain-e2e#1009

Splitting in multiple PRs:

• add public-viewer support to pkg/context #447
• add public-viewer support to pkg/configuration #448
• add public-viewer support to pkg/log #449
• add public-viewer support to MemberClusterService #450
• add public-viewer support to SpaceLister's Get #451
• add public-viewer support to SpaceLister's List #452
• proposal: add banneduser middleware #455

[codecov]

Codecov Report

Attention: Patch coverage is 92.70833% with 7 lines in your changes missing coverage. Please review.

Project coverage is 81.89%. Comparing base (c828088) to head (0ffff03).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/proxy/proxy.go	92.70%	4 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #443      +/-   ##
==========================================
+ Coverage   81.14%   81.89%   +0.75%     
==========================================
  Files          42       42              
  Lines        2630     2707      +77     
==========================================
+ Hits         2134     2217      +83     
+ Misses        408      404       -4     
+ Partials       88       86       -2     

Flag	Coverage Δ
unittests	81.89% <92.70%> (+0.75%)	⬆️

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[filariow]

/retest

[alexeykazakov]

It's a big PR. I only half way through it :)

[filariow]

Looks good! Thank you for addressing the comments! However there is a few lines not covered by the tests. Check out the codecov report. Could you please take a look and see if you can add the missing tests if it's not too tricky?

I've worked on some of them. I could not find an easy fix for the others. AFAIUI, they are happening because the same check was already performed by another function in the chain, like retrieving two times the UserSignup or Space info. I tried refactoring but it was requiring too many changes. Maybe we can refactor later in another PR. WDYT?

[alexeykazakov]

Maybe we can refactor later in another PR. WDYT?

Yes, sure. As I said let's do it if it's not too tricky. Otherwise it's OK to leave it as is.

[mfrancisc]

Great Job 🚀 🏅

Thanks for the additional improvements/tests and for addressing my comments.

[filariow]

/retest

[sonarcloud]

Quality Gate passed

Issues
15 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
1.1% Duplication on New Code

See analysis details on SonarCloud

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alexeykazakov, filariow, mfrancisc

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