Added --verbose flag to auditor builds

[tylerferrara]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This change enables the verbosity feature for auditor builds. By passing the --verbose flag, additional debug statements are logged to show the state changes within image audits. Additionally, this feature enables request counters to track the number of HTTP requests made to GCR. This provides additional visibility into the network usage of the auditor, and gives a rough estimate of how close to the actual GCR quota this service is getting.

Which issue(s) this PR fixes:

Related k8s.io noisy audit alers: #2364
Part of #259 #353

Special notes for your reviewer:

Once deployed to Cloud Run, every 10min the logs should report a debug statement like this:
From 2021-07-26 15:00:0 to 2021-07-26 15:10:00 [10 min] there have been 1429 requests to GCR.

Does this PR introduce a user-facing change?

YES
Logs will now report audit state changes & GCR usage.

Enabled verbose logging feature to auditor builds.

cc: @listx @amwat @justaugustus @kubernetes-sigs/release-engineering

[tylerferrara]

/assign @listx

[listx]

Thanks!

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: listx, tylerferrara

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [listx]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[tylerferrara]

Logs show:
This may be due to network connectivity issues. Please check your network settings, and the status of the service you are trying to reach.
/test pull-cip-auditor-e2e