(chocolateyGH-1155) More comprehensive warn on nupkg/nuspec use

When using nupkg or nuspec, ensure the command checking is looking at
whether "pack " is being called instead of just seeing "pack" in
"package-parameters", which doesn't provide the warning it was designed
to provide.

src/chocolatey.console/Program.cs

@@ -165,7 +165,8 @@ private static void Main(string[] args)
 
         private static void warn_on_nuspec_or_nupkg_usage(string[] args, ChocolateyConfiguration config)
         {
-            if (!args.Any(a => a.contains("pack") || a.contains("push")) && args.Any(a => a.contains(".nupkg") || a.contains(".nuspec")))
+            var commandLine = Environment.CommandLine;
+            if (!(commandLine.contains(" pack ") || commandLine.contains(" push ")) && (commandLine.contains(".nupkg") || commandLine.contains(".nuspec")))
             {
                 if (config.RegularOutput) "chocolatey".Log().Warn("The use of .nupkg or .nuspec in for package name or source is known to cause issues. Please use the package id from the nuspec `<id />` with `-s .` (for local folder where nupkg is found).");
             }