Fix regular expression

[adrianleray]

I have read the CLA Document and I hereby sign the CLA.

This regular expression (^(?[^ ]) [(?<trace_id>[^]])] [(?<action_response>[^]])] (?<repo_path>.) for client : (?.+)/(?.+).$) is not right according with regexp101. Check it please because we are losing some metrics.

Thanks, Adrian :unicorn: