Add small success info when creating remediation

[RaphaelBut]

What type of PR is this?

Adds small info that user is logged in to the cluster as the remediation ( so that one can test RBAC )

What this PR does / Why we need it?

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

Resolves #

Special notes for your reviewer

Unit Test Coverage

Guidelines

• If it's a new sub-command or new function to an existing sub-command, please cover at least 50% of the code
• If it's a bug fix for an existing sub-command, please cover 70% of the code

Test coverage checks

• Added unit tests
• Created jira card to add unit test
• This PR may not need unit tests

Pre-checks (if applicable)

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

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.34%. Comparing base (c090c68) to head (50e6f5c).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #582      +/-   ##
==========================================
+ Coverage   45.39%   46.34%   +0.95%     
==========================================
  Files          87       87              
  Lines        6759     7039     +280     
==========================================
+ Hits         3068     3262     +194     
- Misses       3311     3373      +62     
- Partials      380      404      +24     

Files with missing lines	Coverage Δ
cmd/ocm-backplane/remediation/remediation.go	74.19% <100.00%> (+0.20%)	⬆️

... and 1 file with indirect coverage changes

[feichashao]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: feichashao, RaphaelBut

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[openshift-ci]

@RaphaelBut: all tests passed!

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