logger exception message instead of stack trace

Author: vazois

libs/common/Format.cs

@@ -128,7 +128,7 @@ public static async Task<EndPoint[]> TryCreateEndpoint(string singleAddressOrHos
             }
             catch (Exception ex)
             {
-                logger?.LogError(ex, "Error while trying to resolve hostname:{hostname}", singleAddressOrHostname);
+                logger?.LogError("Error while trying to resolve hostname: {exMessage} [{hostname}]", ex.Message, singleAddressOrHostname);
             }
 
             return null;

libs/host/Configuration/OptionsValidators.cs

@@ -361,8 +361,7 @@ protected override ValidationResult IsValid(object value, ValidationContext vali
                 return initValidationResult;
 
             var logger = ((Options)validationContext.ObjectInstance).runtimeLogger;
-
-            if (!Format.TryParseAddressList(ipAddresses, 0, out var endpoints, out var errorHostnameOrAddress, useForBind: false, logger: logger))
+            if (!Format.TryParseAddressList(ipAddresses, 0, out _, out var errorHostnameOrAddress, useForBind: false, logger: logger))
             {
                 var baseError = validationContext.MemberName != null ? base.FormatErrorMessage(validationContext.MemberName) : string.Empty;
                 var errorMessage = $"{baseError} Expected string in IPv4 / IPv6 format (e.g. 127.0.0.1 / 0:0:0:0:0:0:0:1) or 'localhost' or valid hostname. Actual value: {errorHostnameOrAddress}";