update in trackler-2.1.0.54

- old
+ new

@@ -2,8 +2,8 @@
 
 git checkout master
 git fetch origin master
 git reset --hard origin/master
 
-git submodule foreach git checkout master && git fetch origin master && git reset --hard origin/master
+git submodule foreach git pull origin master
 
 rake && bin/verify-configs && bin/verify-metadata