Improve GCP utilization logging

[jsumners-nr]

NR-478622 is proving difficult to diagnose without better logging around determining the "host" name for the container. We need to verify that all error paths are logging a useful trace message, and that the success path(s) are logging at least an info message of the result.

[Newrelic-Boomi]

https://new-relic.atlassian.net/browse/NR-497154