Updated etcd setup doc

I may be wrong but when setting up ectd cluster, will we not be using ectd hosts that we have setup during the initial setup?
2017-02-09 19:08:48 +05:30 · 2017-02-09 19:08:48 +05:30 · e55c4db009
parent 753e71bac8
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--- a/docs/03-etcd.md
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 In this lab you will bootstrap a 3 node etcd cluster. The following virtual machines will be used:

-* controller0
-* controller1
-* controller2
+* etcd0
+* etcd1
+* etcd2

 ## Why