Better logging for IAM permission error

[francisf2]

Write more detailed logs when an IAM permission error occurs

[francisf2]

Sample current info log:
March 05, 2024 at 09:50 (UTC-5:00) { "ClientAddr": "<...>", "ClientHost": "<...>", "ClientPort": "45148", "ClientUsername": "-", "DownstreamContentSize": 1548, "DownstreamStatus": 500, "Duration": 44210990, "OriginContentSize": 1548, "OriginDuration": 310524, "OriginStatus": 500, "Overhead": 43900466, "RequestAddr": "<...>", "RequestContentSize": 12, "RequestCount": 253742, "RequestHost": "<...>", "RequestMethod": "PUT", "RequestPath": "<...>", "RequestPort": "-", "RequestProtocol": "HTTP/1.1", "RequestScheme": "https", "RetryAttempts": 0, "RouterName": "<...>", "ServiceAddr": "<...>", "ServiceName": "<...>", "ServiceURL": { "Scheme": "http", "Opaque": "", "User": null, "Host": "<...>", "Path": "", "RawPath": "", "OmitHost": false, "ForceQuery": false, "RawQuery": "", "Fragment": "", "RawFragment": "" }, "StartLocal": "2024-03-05T14:50:35.564775947Z", "StartUTC": "2024-03-05T14:50:35.564775947Z", "TLSCipher": "TLS_AES_128_GCM_SHA256", "TLSVersion": "1.3", "entryPointName": "web-secure", "level": "info", "msg": "", "time": "2024-03-05T14:50:35Z" } <...> traefik

[francisf2]

Sample current debug log:
{"level":"debug","module":"github.com/bluecatengineering/traefik-aws-plugin","msg":"2024-03-05T16:14:39Z {\"level\":\"error\",\"msg\":\"PUT\\n<path>\\ncontent-type:application/x-www-form-urlencoded\\ndate:Tue, 05 Mar 2024 16:14:39 UTC\\nhost:<buckent>.s3.amazonaws.com\\nx-amz-content-sha256:<...>\\nx-amz-date:<...>\\nx-amz-security-token:<...>\\ncontent-type;date;host;x-amz-content-sha256;x-amz-date;x-amz-security-token\\n<...>\",\"time\":\"2024-03-05T16:14:39Z\"}","plugin":"plugin-aws","time":"2024-03-05T16:14:39Z"}