Merge pull request #2977 from Jim-Holmstroem/etcd_request_timeout_type

fix(contrib/coreos) etdcd_request_timeout value type

Author: mboersma

contrib/coreos/user-data.example

@@ -16,7 +16,7 @@ coreos:
     # will all publish the same private IP. This is harmless for cloud providers.
     public-ip: $private_ipv4
     # allow etcd to slow down at times
-    etcd_request_timeout: 3
+    etcd_request_timeout: 3.0
   units:
   - name: etcd.service
     command: start