Add multiple proxy support to Backplane configuration

[tokalevasant]

What type of PR is this?

(bug/feature/cleanup/documentation/unit-test)

What this PR does / Why we need it?

Which Jira/Github issue(s) does this PR fix?

Resolves: https://issues.redhat.com/browse/OSD-19785

Special notes for your reviewer

Pre-checks (if applicable)

• Ran unit tests locally
• Validated the changes in a cluster
• Included documentation changes with PR

[tokalevasant]

@supreeth7 made the changes requested. Messed up while squashing so just closed the previous PR and open this one with squashed commits. Also removed the logging as suggested.

[supreeth7]

/retitle Add multiple proxy support to Backplane configuration

[supreeth7]

Verified the changes locally and everything looks good.

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: supreeth7, tokalevasant

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[openshift-ci]

@tokalevasant: all tests passed!

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (339c486) 44.04% compared to head (77d1ae7) 44.18%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #344      +/-   ##
==========================================
+ Coverage   44.04%   44.18%   +0.14%     
==========================================
  Files          54       54              
  Lines        4064     4085      +21     
==========================================
+ Hits         1790     1805      +15     
- Misses       2015     2019       +4     
- Partials      259      261       +2     

Files	Coverage Δ
cmd/ocm-backplane/config/troubleshoot.go	67.56% <100.00%> (ø)
pkg/cli/config/config.go	72.00% <100.00%> (-0.16%)	⬇️