Allows drones to pull pipe meters. Fixes #2497 (#8652)

code/modules/mob/living/silicon/robot/drone/drone.dm

@@ -49,7 +49,8 @@
 	//Allow drones to pull disposal pipes
 	var/list/pull_list = list(
 					/obj/structure/disposalconstruct,
-					/obj/item/pipe
+					/obj/item/pipe,
+					/obj/item/pipe_meter
 					)
 	mob_bump_flag = SIMPLE_ANIMAL
 	holder_type = /obj/item/holder/drone

html/changelogs/fix_drone_pipe_meter_pulling.yml

@@ -0,0 +1,13 @@
+# Your name.  
+author: SpaceBaa
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - bugfix: "Fixed a bug where Maintenance Drones could not pull pipe meters."