Fix 'Unable to retrieve current OCP version: Malformed version' when running unit tests

[jgwest]

What type of PR is this?
/kind failing-test

What does this PR do / why we need it:

• This PR fixes the following error, when running the unit tests locally:

2024/01/24 09:40:13 Unable to retrieve current OCP version: Malformed version:
FAIL 
coverage: 69.8% of statements
FAIL github.com/redhat-developer/gitops-operator/controllers 0.088s
ok github.com/redhat-developer/gitops-operator/controllers/argocd 0.022s coverage: 92.9% of statements
ok github.com/redhat-developer/gitops-operator/controllers/argocd/openshift 0.015s coverage: 69.6% of statements
? github.com/redhat-developer/gitops-operator/version [no test files]
ok github.com/redhat-developer/gitops-operator/controllers/util 0.012s coverage: 16.7% of statements
FAIL
make: *** [Makefile:113: test] Error 1
Error: Process completed with exit code 2.

Have you updated the necessary documentation?

• Documentation update is required by this PR.
• Documentation has been updated.

[jgwest]

Red Hat JIRA #: https://issues.redhat.com/browse/GITOPS-3966

[openshift-ci]

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[jgwest]

/retest

[jgwest]

/retest

[chetan-rns]

/lgtm

[chetan-rns]

I think passing the namespace via an environment variable would be a better approach than reading it from a file. We can revisit this in a different PR.

[jgwest]

Thanks @chetan-rns!