Fetch Backplane API URL via OCM environment

[samanthajayasinghe]

What type of PR is this?

feature

What this PR does / Why we need it?

This PR automatically detect the backplane URL via OCM env and users don't need set BP API URL in the config file

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

https://issues.redhat.com/browse/OSD-19188
Resolves #

Special notes for your reviewer

How to test

step 1

• delete the URL setting from config file
• Login prod/stg/int env clusters and check other bp-cli commands ( eg cloud console)

step2

• Keep URL setting in the config file
• It will override via ocm env URL and warn users

step3

• Set BP API URL via env vars ( for ISV's )
• env BP API has high priority over OCM env

Pre-checks (if applicable)

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

[codecov-commenter]

Codecov Report

Merging #281 (da7e96c) into main (4f63014) will increase coverage by 0.08%.
The diff coverage is 59.37%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #281      +/-   ##
==========================================
+ Coverage   46.83%   46.91%   +0.08%     
==========================================
  Files          53       53              
  Lines        3540     3568      +28     
==========================================
+ Hits         1658     1674      +16     
- Misses       1621     1633      +12     
  Partials      261      261              

Files	Coverage Δ
pkg/cli/config/config.go	64.38% <82.60%> (+3.27%)	⬆️
pkg/ocm/ocmWrapper.go	0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

[supreeth7]

Overall nicely done! 💯
Requested a few changes/refinements.

[supreeth7]

Tested it locally and everything checks out.
A few UI/UX improvement suggestions and this will be good to be merged.

[openshift-ci]

@samanthajayasinghe: all tests passed!

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[supreeth7]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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

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