calyptia: submit metrics when not in fleet mode.

[pwhelan]

Summary

Submit metrics to calyptia cloud when not in fleet mode.

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Enter [N/A] in the box, if an item is not applicable to your change.

Testing
Before we can approve your change; please submit the following in a comment:

• Example configuration file for the change
• Debug log output from testing the change

• Attached Valgrind output that shows no leaks or memory corruption was found

If this is a change to packaging of containers or native binaries then please confirm it works for all targets.

• Run local packaging test showing all targets (including any new ones) build.
• Set ok-package-test label to test for all targets (requires maintainer to do).

Documentation

• Documentation required for this feature

Backporting

• Backport to latest stable release.

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Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.

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• To see the specific tasks where the Asana app for GitHub is being used, see below:
  • https://app.asana.com/0/0/1205285584289449

[edsiper]

Please adjust the code to the style as described here:

https://github.com/fluent/fluent-bit/blob/master/CONTRIBUTING.md#braces-usage-on-conditionals-loops-and-functions

Also, please change the commit subject so it represents the component that is being changed, in this case is custom_calyptia:

https://github.com/fluent/fluent-bit/blob/master/CONTRIBUTING.md#commit-changes