(chocolatey#2899) Move validation logic inside command check

First we check that we are running the info command, then we do
validation on whether no package ids or multiple package ids have
been passed to the command.

This allows the list command to function as normal, as it happily
accepts 0 or multiple packages.

src/chocolatey/infrastructure.app/commands/ChocolateyListCommand.cs

@@ -147,19 +147,22 @@ public virtual void handle_additional_argument_parsing(IList<string> unparsedArg
         public virtual void handle_validation(ChocolateyConfiguration configuration)
         {
             //Validate a package has been passed to info.
-            if(configuration.CommandName == "info" && string.IsNullOrWhiteSpace(configuration.Input))
+            if(configuration.CommandName == "info")
             {
-                throw new ApplicationException(@"A single package id is required to run the info again.");
-            }
+
+                if (string.IsNullOrWhiteSpace(configuration.Input))
+                {
+                    throw new ApplicationException(@"A single package id is required to run the info again.");
+                }
 
-            //Validate only a single package has been passed to info
-            //TODO: Provide ability to get info on a list of packages
-            string[] input = configuration.Input.Split(' ');
-            if (input.Count() > 1)
-            {
-                throw new ApplicationException(@"This command only accepts a single package id.");
+                //Validate only a single package has been passed to info
+                //TODO: Provide ability to get info on a list of packages
+                string[] input = configuration.Input.Split(' ');
+                if (input.Count() > 1)
+                {
+                    throw new ApplicationException(@"This command only accepts a single package id.");
+                }
             }
-
 
             if (!string.IsNullOrWhiteSpace(configuration.SourceCommand.Username) && string.IsNullOrWhiteSpace(configuration.SourceCommand.Password))
             {
@@ -289,13 +292,7 @@ public virtual void noop(ChocolateyConfiguration configuration)
 
         public virtual void run(ChocolateyConfiguration configuration)
         {
-            var logger = ChocolateyLoggers.LogFileOnly;
             var packageResults = _packageService.list_run(configuration).ToList();
-
-            if (configuration.RegularOutput)
-            {
-                logger = ChocolateyLoggers.Normal;
-            }
 
             log_deprecation_warning(configuration);