Rename admin_package policy to create_package

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

ee/app/policies/ee/project_policy.rb

@@ -95,7 +95,7 @@ module EE
       rule { can?(:developer_access) }.policy do
         enable :admin_board
         enable :admin_vulnerability_feedback
-        enable :admin_package
+        enable :create_package
       end
 
       rule { can?(:public_access) }.enable :read_package

ee/lib/api/maven_packages.rb

@@ -29,7 +29,7 @@ module API
       end
 
       def authorize_create_package!
-        authorize!(:admin_package, user_project)
+        authorize!(:create_package, user_project)
       end
 
       def extract_format(file_name)