es_out: support Upstream Servers with configuration overriding#7608

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mabrarov wants to merge 10 commits intofluent:masterfrom

mabrarov:feature/out_es_upstream_support_extended

Commits on Jan 2, 2026

pipeline: outputs: es: basic support of Upstream, only parameters known to parser of Upstream node configuration section are implemented, e.g. "host" and "port"
mabrarov
committed
engine: support of tests which require generation of context passed to the test callback based on configuration of Fluent Bit and based on configuration of plugin
mabrarov
committed
pipeline: outputs: es: fixed tests after modification of formatter callback contract
mabrarov
committed
pipeline: outputs: es: support overriding the most plugin parameters with Upstream node configuration
mabrarov
committed
pipeline: outputs: es: tests for upstream node configuration properties
mabrarov
committed
engine: support of tests which require generation of context passed to the test callback based on configuration of Fluent Bit and based on configuration of plugin
mabrarov
committed
pipeline: outputs: es: code deduplication
mabrarov
committed
pipeline: outputs: es: plugin configuration failure if failed to duplicate username or password used for AWS authentication
mabrarov
committed
pipeline: outputs: es: fix of memory leak when using AWS authentication and retrying buffer flush
mabrarov
committed
pipeline: outputs: es: avoid zero pointer dereferencing when HTTP client creation failed
mabrarov
committed