Description of problem:
Setup multi-node env with resolve the master/node name in /etc/hosts. 

Run the debug.sh on master when the /etc/hosts file contains extra space in the end of the hostname.

eg.
cat -e /etc/hosts
10.66.128.64    node3.bmeng.local      $

It will report incorrect messages about the IP mis-match.


Version-Release number of selected component (if applicable):
openshift-sdn commit: 855a002d3ca0481e0a36a5360737841a3904aa97

How reproducible:
always

Steps to Reproduce:
1. Run debug.sh on master when the /etc/hosts contains extra space in the end of node hostname.
2.
3.

Actual results:
# ./debug.sh
Analyzing master
Node node3.bmeng.local: no IP address in either DNS or /etc/hosts
Node node3.bmeng.local: the IP in OpenShift (10.66.128.64) does not match DNS/hosts ()

# ping node3.bmeng.local
PING node3.bmeng.local (10.66.128.64) 56(84) bytes of data.


Expected results:
Should not report such error if the hostname resolvable. 

Additional info: