[api][webui] Add packages to import_from_package

Create also Packages and PackageGroups when importing a xml from package
in the `Kiwi::Image#import_from_package` method.

Pair-programmed by @DavidKang and @Ana06.

src/api/app/models/kiwi/image.rb

@@ -63,6 +63,27 @@ def self.build_from_xml(xml_string, md5)
       new_image.repositories.build(attributes)
       order += 1
     end
+    package_groups = xml["packages"]
+    package_groups = [xml["packages"]] if xml["packages"].is_a?(Hash)
+    package_groups.each do |package_group_xml|
+      attributes = {
+        kiwi_type:    package_group_xml['type'],
+        profiles:     package_group_xml['profiles '],
+        pattern_type: package_group_xml['patternType']
+      }
+      package_group = Kiwi::PackageGroup.new(attributes)
+      package_group_xml['package'].each do |package|
+        attributes = {
+          name:     package['name'],
+          arch:     package['arch'],
+          replaces: package['replaces']
+        }
+        attributes['bootinclude'] = package['bootinclude'] == 'true' if package.key?('bootinclude')
+        attributes['bootdelete'] = package['bootdelete'] == 'true' if package.key?('bootdelete')
+        package_group.packages.build(attributes)
+      end
+      new_image.package_groups << package_group
+    end
     new_image
   end
 

src/api/spec/models/kiwi/image_spec.rb

@@ -75,6 +75,25 @@
           replaceable: false,
           username: nil
         )
+        expect(subject.package_groups.first).to have_attributes(
+          kiwi_type: 'image',
+          pattern_type: 'onlyRequired',
+          profiles: nil
+        )
+        expect(subject.package_groups.first.packages.first).to have_attributes(
+          name: 'e2fsprogs',
+          arch: nil,
+          replaces: nil,
+          bootinclude: nil,
+          bootdelete: nil
+        )
+        expect(subject.package_groups.first.packages.last).to have_attributes(
+          name: 'gfxboot-devel',
+          arch: nil,
+          replaces: nil,
+          bootinclude: true,
+          bootdelete: nil
+        )
       end
     end