(chocolatey#2603) Export pin status

This adds the ability for the export command to include pins in the
exported file. They will be exported if --include-arguments is
specified, but can be excluded with --exclude-pins.

Author: TheCakeIsNaOH

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

@@ -58,6 +58,9 @@ public void configure_argument_parser(OptionSet optionSet, ChocolateyConfigurati
                 .Add("include-arguments|include-remembered-arguments",
                     "Include Remembered Arguments - controls whether or not remembered arguments for each package appear in generated file.  Defaults to false.",
                     option => configuration.ExportCommand.IncludeRememberedPackageArguments = option != null)
+                .Add("exclude-pins",
+                    "Exclude Pins - controls whether or not pins are included. Only applies if remembered arguments are exported. Defaults to false.",
+                    option => configuration.ExportCommand.ExcludePins = option != null)
                 ;
         }
 
@@ -104,6 +107,7 @@ choco export [<options/switches>]
     choco export
     choco export --include-version-numbers
     choco export --include-version-numbers --include-remembered-arguments
+    choco export --include-remembered-arguments --exclude-pins
     choco export ""'c:\temp\packages.config'""
     choco export ""'c:\temp\packages.config'"" --include-version-numbers
     choco export -o=""'c:\temp\packages.config'""
@@ -221,6 +225,11 @@ public void run(ChocolateyConfiguration configuration)
 
                                     //Make sure to reset the configuration
                                     configuration = originalConfiguration.deep_copy();
+
+                                    if (!configuration.ExportCommand.ExcludePins && pkgInfo.IsPinned)
+                                    {
+                                        xw.WriteAttributeString("pinPackage", "true");
+                                    }
                                 }
 
                                 xw.WriteEndElement();

src/chocolatey/infrastructure.app/configuration/ChocolateyConfiguration.cs

@@ -562,6 +562,7 @@ public sealed class ExportCommandConfiguration
     {
         public bool IncludeVersionNumbers { get; set; }
         public bool IncludeRememberedPackageArguments { get; set; }
+        public bool ExcludePins { get; set; }
 
         public string OutputFilePath { get; set; }
     }