improvement: S3C-1551 add access key to logs

lib/auth/v4/headerAuthCheck.js

@@ -108,6 +108,8 @@ function check(request, log, data, awsService) {
     const accessKey = credentialsArr.shift();
     const credentialScope = credentialsArr.join('/');
 
+    log.addDefaultFields({ accessKey });
+
     // In AWS Signature Version 4, the signing key is valid for up to seven days
     // (see Introduction to Signing Requests.
     // Therefore, a signature is also valid for up to seven days or

lib/auth/v4/queryAuthCheck.js

@@ -57,6 +57,8 @@ function check(request, log, data) {
     const service = credential[3];
     const requestType = credential[4];
 
+    log.addDefaultFields({ accessKey });
+
     const isTimeSkewed = checkTimeSkew(timestamp, expiry, log);
     if (isTimeSkewed) {
         return { err: errors.RequestTimeTooSkewed };