Fix ip e2e test case

[perdasilva]

Signed-off-by: perdasilva perdasilva@redhat.com
Description of the change:
This PR updates one of the ip e2e test cases to use a random csv name and to delete the csv in on the AfterEach

Motivation for the change:
CI Stability, to resolve this failure:

Failure in Spec Setup (BeforeEach) [1.967 seconds]
Install Plan
/home/runner/work/operator-lifecycle-manager/operator-lifecycle-manager/test/e2e/installplan_e2e_test.go:54
  when an InstallPlan step contains a deprecated resource version
  /home/runner/work/operator-lifecycle-manager/operator-lifecycle-manager/test/e2e/installplan_e2e_test.go:73
    increments a metric counting the warning [BeforeEach]
    /home/runner/work/operator-lifecycle-manager/operator-lifecycle-manager/test/e2e/installplan_e2e_test.go:196

    Expected success, but got an error:
        <*errors.StatusError | 0xc002b56fa0>: {
            ErrStatus: {
                TypeMeta: {Kind: "", APIVersion: ""},
                ListMeta: {
                    SelfLink: "",
                    ResourceVersion: "",
                    Continue: "",
                    RemainingItemCount: nil,
                },
                Status: "Failure",
                Message: "clusterserviceversions.operators.coreos.com \"test-csv\" already exists",
                Reason: "AlreadyExists",
                Details: {
                    Name: "test-csv",
                    Group: "operators.coreos.com",
                    Kind: "clusterserviceversions",
                    UID: "",
                    Causes: nil,
                    RetryAfterSeconds: 0,
                },
                Code: 409,
            },
        }
        clusterserviceversions.operators.coreos.com "test-csv" already exists

Reviewer Checklist

• Implementation matches the proposed design, or proposal is updated to match implementation
• Sufficient unit test coverage
• Sufficient end-to-end test coverage
• Docs updated or added to /doc
• Commit messages sensible and descriptive
• Tests marked as [FLAKE] are truly flaky
• Tests that remove the [FLAKE] tag are no longer flaky

[dinhxuanvu]

/lgtm

[openshift-ci]

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This pull-request has been approved by: dinhxuanvu, perdasilva

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