[newrelic-logging] Fix env var order

[mickutz]

Is this a new chart

No.

What this PR does / why we need it:

The logging chart is broken as of version newrelic-logging 1.21.0 , where this change was introduced.
The consequence from that change is that when mode: persistentVolume is being used, the FB_DB variable does not get properly resolved as the NODE_NAME variable is only defined further down the list.
From k8s docs:

Note that order matters in the env list. An environment variable is not considered "defined" if it is specified further down the list. 

Which issue this PR fixes

• fixes [newrelic-logging] BREAKING Bug in env values order #1408

Special notes for your reviewer:

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• Chart Version bumped
• Title of the PR starts with chart name (e.g. [mychartname])

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