Change the host MSI dependency key for correct reference counting.

Earlier the host MSI dependency key changed for every version. Therefore
the following stesp uninstalled host aggresively.
- Install a older dotnet CLI bundle (say v1)
- Install a newer dotnet CLI bundle (say v2)
- Uninstall the newer CLI bundle. This removes the host completely and
  leaves the older version v1 unusable.

With this fix all the versions of the CLI in the machine will reference
count the host correctly.

Fixes - #2713

scripts/dotnet-cli-build/MsiTargets.cs

@@ -150,7 +150,7 @@ namespace Microsoft.DotNet.Cli.Build
 
             Cmd("powershell", "-NoProfile", "-NoLogo",
                 Path.Combine(Dirs.RepoRoot, "packaging", "windows", "host", "generatemsi.ps1"),
-                inputDir, SharedHostMsi, WixRoot, sharedHostBrandName, MsiVersion, CliDisplayVersion, CliNugetVersion, Arch, wixObjRoot)
+                inputDir, SharedHostMsi, WixRoot, sharedHostBrandName, MsiVersion, CliNugetVersion, Arch, wixObjRoot)
                     .Execute()
                     .EnsureSuccessful();
             return c.Success();