[FIX] tools: Save packages with lowercase names

Author: edvilme

src/Cli/dotnet/commands/dotnet-pack/PackCommandParser.cs

@@ -53,6 +53,14 @@ internal static class PackCommandParser
 
         public static readonly CliOption<string> ConfigurationOption = CommonOptions.ConfigurationOption(LocalizableStrings.ConfigurationOptionDescription);
 
+        public static readonly CliOption<string[]> LowercaseVersion = new ForwardedOption<String[]>("--property", "-property", "/property", "/p", "-p", "--p")
+            .SetForwardingFunction((optionVals) =>
+                optionVals
+                    .SelectMany(Microsoft.DotNet.Cli.Utils.MSBuildPropertyParser.ParseProperties)
+                    .Where(o => o.key.Equals("Version", StringComparison.OrdinalIgnoreCase))
+                    .Select(keyValue => $"--property:{keyValue.key}={keyValue.value.ToLowerInvariant()}")
+            ).AllowSingleArgPerToken();
+
         private static readonly CliCommand Command = ConstructCommand();
 
         public static CliCommand GetCommand()
@@ -78,6 +86,7 @@ private static CliCommand ConstructCommand()
             command.Options.Add(CommonOptions.VersionSuffixOption);
             command.Options.Add(ConfigurationOption);
             command.Options.Add(CommonOptions.DisableBuildServersOption);
+            command.Options.Add(LowercaseVersion);
             RestoreCommandParser.AddImplicitRestoreOptions(command, includeRuntimeOption: true, includeNoDependenciesOption: true);
 
             command.SetAction(PackCommand.Run);