Set salt master command waiting timeout to 600

600 sec is timeout set in system.salt.master.api, but this value
may be overriden by wrong class order
from system.salt.master.single (10 sec).

Set the 600 sec in the overrides.yml

Change-Id: If22663398c7046d4162118c438f7aa25c0ec9467
diff --git "a/\173\173 cookiecutter._env_name \175\175/overrides.yml" "b/\173\173 cookiecutter._env_name \175\175/overrides.yml"
index e1cea68..dd6f191 100644
--- "a/\173\173 cookiecutter._env_name \175\175/overrides.yml"
+++ "b/\173\173 cookiecutter._env_name \175\175/overrides.yml"
@@ -28,6 +28,8 @@
           password: $6$oV7iKxfx$7DOZUfLw30d/W.pzUf97F0z1JhxgNmFAiKT1HhIodjkWb0M/.dTYAc3uxDCScR3lvCALjRe4/xWtiDyywf8wi1
       purge_repos: true
   salt:
+    master:
+      command_timeout: 600
     minion:
       log:
         level: debug