Enhance visit with login

[FedeAlonso]

https://issues.redhat.com/browse/RHOAIENG-15671

Description

We are having some issues when trying to use a contributor role user (not an admin one) in the e2e as we depend on an already created test-variables.yml.
That file, has the contributor user stored as TEST_USER_3.

How Has This Been Tested?

Locally, running against a 2.16 RHOAI cluster

Test Impact

This is a modification of the way the users log in the tests. So full impact.

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit or cypress tests for related changes)

After the PR is posted & before it merges:

• The developer has tested their solution on a cluster by using the image produced by the PR to main

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[manosnoam]

/lgtm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.65%. Comparing base (6f439e5) to head (509d4ce).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3469      +/-   ##
==========================================
- Coverage   85.65%   85.65%   -0.01%     
==========================================
  Files        1347     1347              
  Lines       30676    30676              
  Branches     8554     8554              
==========================================
- Hits        26275    26274       -1     
- Misses       4401     4402       +1     

see 1 file with indirect coverage changes

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[manosnoam]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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