CLEANUP/MINOR: lint: clean linter rules #382

Job	Run time
generate-models	1m 45s
generate-specification	51s
HAProxy check commit message	0s
lint-spec	9s
go mod tidy	11s
golangci-lint	1m 49s
Build	39s
Tests	1m 42s
e2e on HAProxy (2.1)	1m 52s
e2e on HAProxy (2.2)	1m 50s
e2e on HAProxy (2.3)	2m 5s
e2e on HAProxy (2.4)	1m 57s
e2e on HAProxy (2.5)	2m 22s
e2e on HAProxy (2.6)	1m 54s
e2e on HAProxy (2.7)	2m 26s
e2e on HAProxy (2.8)	1m 48s
	23m 20s

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