BUG/MINOR: be less restrictive when looking for a leaf certificate #1044

Job	Run time
generate-specification	52s
generate-models	1m 36s
HAProxy check commit message	-1s
golangci-lint	1m 9s
lint-spec	12s
go mod tidy	20s
license-check	32s
Build	32s
Tests	58s
Test equal	1m 28s
e2e on HAProxy (2.8)	52s
e2e on HAProxy (2.5)	46s
e2e on HAProxy (2.4)	50s
e2e on HAProxy (2.1)	51s
e2e on HAProxy (2.2)	51s
e2e on HAProxy (2.3)	56s
e2e on HAProxy (2.7)	57s
e2e on HAProxy (2.6)	51s
	14m 32s

Provide feedback