fix(newrelic-logging): correct logLevel default to enable global.verboseLog inheritance

- Changed fluentBit.logLevel default from "info" to "" (empty)
- This allows global.verboseLog=true to correctly set LOG_LEVEL=debug
- Added clear precedence comments in values.yaml

Root cause: values.yaml had logLevel: "info" as default, causing the
template's if $logLevel condition to always be true, preventing
global.verboseLog from being evaluated.

Test Results: All 107 helm-unittest tests pass
Template validation:
- Default (no settings) → LOG_LEVEL="info"
- global.verboseLog=true → LOG_LEVEL="debug"
- Explicit fluentBit.logLevel → takes precedence

Author: dpacheconr

charts/newrelic-logging/values.yaml

@@ -30,7 +30,10 @@
 proxy: ""
 
 fluentBit:
-  logLevel: "info"
+  # logLevel: Set the log level for Fluent Bit (trace, debug, info, warn, error, off)
+  # When empty, defaults to "info" unless global.verboseLog is true (then "debug")
+  # Override this to explicitly set a log level, which takes precedence over global.verboseLog
+  logLevel: ""
   path: "/var/log/containers/*.log"
   linuxMountPath: /var
   windowsPath: "C:\\var\\log\\containers\\*.log"