can't load security-profiles-operator as dependancy of another operator

[Billy99]

What type of PR is this?

/kind bug

What this PR does / why we need it:

For #2699
When loaded through OperatorHub as a dependency of another operator, security-profiles-operator is loaded in the namespace of the other operator. When this happens, any created SelinuxProfile stays in the Pending State.

It appears that the function getDS() is searching for the DaemonSet with a label of "spod". However, the r.client.List() call is returning all DaemonSets in the Namespace and bailing because it found more than one.

This commit changes the logic to call Get() instead of GetList().

While trying to verify the above, ran into issues with the move of SelinuxProfile from namespace scoped to cluster scoped (#2745). Recently SelinuxProfile was moved from Namespace scoped to cluster scoped. Some of the code was still using the Namespace as part of the generation of the "Usage" string. The Namespace was blank, so the usage string just ended in an "_", something like "policyName_.process". However, workloadannotator was using the application pods namespace and the code to strip the "_namspace.process" off the usage string to get the actual profile name was failing. So just removed all the logic was appending "_namespace" to the profile name in the Usage since namespace is no longer used.

Which issue(s) this PR fixes:

Fixes #2699
Fixes #2745

Does this PR have test?

No, but the linked issues describe how to reproduce.

Special notes for your reviewer:

Does this PR introduce a user-facing change?

The Usage should no longer have an "_" after the profile name.

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[k8s-ci-robot]

Hi @Billy99. Thanks for your PR.

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[saschagrunert]

/ok-to-test

[saschagrunert]

/lgtm cancel

CI is not happy:

internal/pkg/manager/nodestatus/nodestatus.go:268:3: return with no blank line before (nlreturn)
		return nil, fmt.Errorf("cannot Get DS: %w", err)

[k8s-ci-robot]

Keywords which can automatically close issues and at(@) or hashtag(#) mentions are not allowed in commit messages.

The list of commits with invalid commit messages:

• 5d27dc8 can't load security-profiles-operator as dependancy of another operator
• 1a64f22 after moving to cluster scoped, namesapce still used

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Billy99, ccojocar, saschagrunert

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• OWNERS [ccojocar,saschagrunert]

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 11.11111% with 8 lines in your changes missing coverage. Please review.

Project coverage is 23.32%. Comparing base (11d77f4) to head (1a64f22).
Report is 741 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2746       +/-   ##
===========================================
- Coverage   45.50%   23.32%   -22.19%     
===========================================
  Files          79      116       +37     
  Lines        7782    19707    +11925     
===========================================
+ Hits         3541     4596     +1055     
- Misses       4099    14893    +10794     
- Partials      142      218       +76