Don't add empty lines to Fluent-bit config

[pmalek-sumo]

Description

Empty lines are ok in Fluent-bit config but they cause problems in yaml files so just drop empty lines when migrating Fluent-bit configuration.

Additionally, change Fluent-bit config indentation to 4 spaces instead of 2 because fluent bit chart uses 4 spaces:

https://github.com/fluent/helm-charts/blob/e6805d4509868b76717677c7f7eecc4834d49d5a/charts/fluent-bit/templates/configmap.yaml#L8-L15

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Testing performed

• Redeploy fluentd and fluentd-events pods
• Confirm events, logs, and metrics are coming in

[kkujawa-sumo]

I still see this error:

kubectl logs my-release-fluent-bit-sgq9m
[2021/01/12 10:40:04] [  Error] File /fluent-bit/etc/fluent-bit.conf
[2021/01/12 10:40:04] [  Error] Error in line 12: Invalid indentation level
Fluent Bit v1.6.8
* Copyright (C) 2019-2020 The Fluent Bit Authors
* Copyright (C) 2015-2018 Treasure Data
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
* https://fluentbit.io

[kkujawa-sumo]

with the latest changes it works :)