Loki: fluent-plugin-grafana-loki: add option to disable server certificate verification

[jgehrcke]

Unless I am missing something (entirely possible) the plugin has no configuration parameter to disable server certificate verification. This should be added for test setups and the like.

The parameter could for example be called tls_verify or tls_insecure.

Related:
https://docs.fluentd.org/configuration/transport-section#parameters

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[jgehrcke]

@cyriltovena @wardbekker @takanabe let's revive this, right?

[takanabe]

I don't think fluent-plugin-grafana-loki uses server/http_server plugin helpers. So, I think the options for disabling server certificate verification is not necessary.

[takanabe]

ah... maybe, I misunderstood you 💦 https://github.com/grafana/loki/pull/2171/files is what are you expecting?

[cyriltovena]

I think yes ! @jgehrcke Can you confirm ?

[jgehrcke]

https://github.com/grafana/loki/pull/2171 came off with a bit of a misunderstanding of this issue here but I'll happily provide guidance. We'll get there.

[jgehrcke]

@cyriltovena would you mind pushing the 1.2.13 release to https://rubygems.org/gems/fluent-plugin-grafana-loki?

CC @woodsaj @briangann

[cyriltovena]

will do now.

[cyriltovena]

Should be good now

[jgehrcke]

Thank you @cyriltovena!