Fix flaky unit test which check the default operator namespace

[ccojocar]

What type of PR is this?

/kind failing-test

What this PR does / why we need it:

This unit test cannot run in parallel because environment variables are global causing random failures. This happens because one test case invalidates the other.

Which issue(s) this PR fixes:

Does this PR have test?

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Fix flaky unit test which checks default operator namespace.

[pjbgf]

We will need to set lint ignore to get linter happy on the below:

Error: internal/pkg/config/config_test.go:23:1: Function TestGetOperatorNamespace missing the call to method parallel (paralleltest)
func TestGetOperatorNamespace(t *testing.T) {
^
Error: internal/pkg/config/config_test.go:42:2: Range statement for test TestGetOperatorNamespace missing the call to method parallel in test Run (paralleltest)
	for _, tt := range tests {
	^

[JAORMX]

/lgtm

[ccojocar]

/test all

[ccojocar]

/test all

[ccojocar]

/retest

[ccojocar]

/test all

[ccojocar]

/test e2e

[k8s-ci-robot]

@ccojocar: The specified target(s) for /test were not found.
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• /test pull-security-profiles-operator-build
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• /test pull-security-profiles-operator-verify

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/test e2e

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[ccojocar]

/test pull-security-profiles-operator-test-e2e

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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