Adjust paths in bot_update.py after moving recipes to subdir

Bug: 699120, 704864
Change-Id: Iea62a8382ae2553af3f080f07358de53c278ad7c
Reviewed-on: https://chromium-review.googlesource.com/459496
Reviewed-by: Emma Söderberg <emso@chromium.org>
Commit-Queue: Paweł Hajdan Jr. <phajdan.jr@chromium.org>

recipes/recipe_modules/bot_update/resources/bot_update.py

@@ -38,7 +38,7 @@ BUILDER_DIR = path.dirname(CURRENT_DIR)
 # Relative to this script's filesystem path.
 THIS_DIR = path.dirname(path.abspath(__file__))
 
-DEPOT_TOOLS_DIR = path.abspath(path.join(THIS_DIR, '..', '..', '..'))
+DEPOT_TOOLS_DIR = path.abspath(path.join(THIS_DIR, '..', '..', '..', '..'))
 
 CHROMIUM_GIT_HOST = 'https://chromium.googlesource.com'
 CHROMIUM_SRC_URL = CHROMIUM_GIT_HOST + '/chromium/src.git'