Updating Review Comments.

Comitting changes in review comments of,
https://review.opencontrail.org/#/c/1548/

Change-Id: I15c97bac0fcc208c50601ea367904dad3dc9f275

1. Changes to provision rsyslog for node addition to existing topology.
2. fab task to copy testbed.py file to all cfgms.
Change-Id: I15c97bac0fcc208c50601ea367904dad3dc9f275

1. Changes to provision rsyslog for node addition to existing topology.
2. fab task to copy testbed.py file to all cfgms.
3. Comitting changes in review comments.

Change-Id: I15c97bac0fcc208c50601ea367904dad3dc9f275

1. removed code for loop-back ip.
2. chenged server option to mode option.
3. removed PASSWORD from command string.
4. moved back to ConfigParser from cfgparse.

Change-Id: I15c97bac0fcc208c50601ea367904dad3dc9f275
Merge "Updating Review Comments."