Let product operators control product-specific vector config

[nightkr]

Currently, op-rs embeds a lot of product-specific knowledge. For example, there are several configuration bits that are only relevant to our specific deployment of OPA that are always embedded in the configuration (

operator-rs/crates/stackable-operator/src/product_logging/framework.rs

Lines 755 to 805 in 3548b01

	files_opa_bundle_builder:
	type: file
	include:
	- {STACKABLE_LOG_DIR}/bundle-builder/current
	files_opa_json:
	type: file
	include:
	- {STACKABLE_LOG_DIR}/opa/current
	transforms:
	processed_files_opa_bundle_builder:
	inputs:
	- files_opa_bundle_builder
	type: remap
	source: |
	parsed_event = parse_regex!(strip_whitespace(strip_ansi_escape_codes(string!(.message))), r'(?P<timestamp>[0-9]{{4}}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])T(2[0-3]|[01][0-9]):[0-5][0-9]:[0-5][0-9].[0-9]{{6}}Z)[ ]+(?P<level>\w+)[ ]+(?P<logger>.+):[ ]+(?P<message>.*)')
	.timestamp = parse_timestamp!(parsed_event.timestamp, "%Y-%m-%dT%H:%M:%S.%6fZ")
	.level = parsed_event.level
	.logger = parsed_event.logger
	.message = parsed_event.message
	processed_files_opa_json:
	inputs:
	- files_opa_json
	type: remap
	source: |
	parsed_event = parse_json!(string!(.message))
	keys = keys!(parsed_event)
	if includes(keys, "timestamp") {{
	.timestamp = parse_timestamp!(parsed_event.timestamp, "%Y-%m-%dT%H:%M:%S.%fZ")
	}} else {{
	.timestamp = parse_timestamp!(parsed_event.time, "%Y-%m-%dT%H:%M:%SZ")
	}}
	if includes(keys, "decision_id") {{
	.logger = "decision"
	}} else {{
	.logger = "server"
	}}
	.level = upcase!(parsed_event.level)
	.message = string!(parsed_event.msg)
	del(parsed_event.time)
	del(parsed_event.timestamp)
	del(parsed_event.level)
	del(parsed_event.msg)
	.message = .message + "\n" + encode_key_value(object!(parsed_event), field_delimiter: "\n")

).

It makes sense to offer a few defaults ("this is how we typically configure log4j to behave"), but the final say should be up to the operator and we definitely shouldn't have single-product configurations in the framework crate.