fix create folder before write info file
tests loosen the ttl checking
Merge pull request #309 from xiangli-cmu/master

fix create folder before write info file
test fix wrong assumption should be previous index + 501 + 6
Merge pull request #310 from xiangli-cmu/master

test fix wrong assumption should be previous index + 501 + 6
Merge branch 'master' of https://github.com/coreos/etcd into clean-up-config

Conflicts:
	etcd.go