example: Fix incorrect path of log package; Fix incorrect usage of me…

[BIAOXYZ]

Description of the change:

1. Fix the incorrect package path:

• "sigs.k8s.io/controller-runtime/pkg/log" should be "sigs.k8s.io/controller-runtime/pkg/runtime/log";
• Add package "k8s.io/apimachinery/pkg/labels" since it is used.

2. Fix some incorrect references of client object:

• client.ListOption should be client.ListOptions;
• the sequence of parameters in client.List is also incorrect before.

Motivation for the change:

Closes #1907

[openshift-ci-robot]

Hi @BIAOXYZ. Thanks for your PR.

I'm waiting for a operator-framework or openshift member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[estroz]

@BIAOXYZ we recently bumped controller-runtime to v0.2.0, which uses the current log package path. It seems your module setup is pulling the incorrect controller-runtime version for your operator-sdk version, as this bump is only in master. This PR reverts changes we recently made during the bump.