Add ci fields in project create/update feature API

lib/api/helpers.rb

@@ -157,7 +157,7 @@ module API
     def attributes_for_keys(keys, custom_params = nil)
       attrs = {}
       keys.each do |key|
-        if params[key].present? or (params.has_key?(key) and params[key] == false)
+        if params[key].present? or (params.has_key?(key) and (params[key].empty? or params[key] == false))
           attrs[key] = params[key]
         end
       end

lib/api/projects.rb

@@ -114,7 +114,10 @@ module API
                                      :namespace_id,
                                      :public,
                                      :visibility_level,
-                                     :import_url]
+                                     :import_url,
+                                     :build_allow_git_fetch,
+                                     :build_timeout,
+                                     :build_coverage_regex]
         attrs = map_public_to_visibility_level(attrs)
         @project = ::Projects::CreateService.new(current_user, attrs).execute
         if @project.saved?
@@ -159,7 +162,10 @@ module API
                                      :shared_runners_enabled,
                                      :public,
                                      :visibility_level,
-                                     :import_url]
+                                     :import_url,
+                                     :build_allow_git_fetch,
+                                     :build_timeout,
+                                     :build_coverage_regex]
         attrs = map_public_to_visibility_level(attrs)
         @project = ::Projects::CreateService.new(user, attrs).execute
         if @project.saved?
@@ -215,7 +221,10 @@ module API
                                      :snippets_enabled,
                                      :shared_runners_enabled,
                                      :public,
-                                     :visibility_level]
+                                     :visibility_level,
+                                     :build_allow_git_fetch,
+                                     :build_timeout,
+                                     :build_coverage_regex]
         attrs = map_public_to_visibility_level(attrs)
         authorize_admin_project
         authorize! :rename_project, user_project if attrs[:name].present?