config: use absolute path

Signed-off-by: Shizuo Fujita <fujita@clear-code.com>

Author: Watson1978

lib/fluent/config/v1_parser.rb

@@ -139,7 +139,7 @@ def parse_element(root_element, elem_name, attrs = {}, elems = [])
           end
         end
 
-        @on_file_parsed&.call(File.join(@include_basepath, @fname)) if root_element
+        @on_file_parsed&.call(File.expand_path(File.join(@include_basepath, @fname))) if root_element
 
         return attrs, elems
       end

lib/fluent/config/yaml_parser/loader.rb

@@ -60,7 +60,7 @@ def load(path)
             visitor.accept(Psych.parse(f))
           end
 
-          @on_file_parsed&.call(path.to_s)
+          @on_file_parsed&.call(File.expand_path(path.to_s))
 
           config
         end