MB-100: XDCR tests to non-root,non-sudo automation

Change-Id: I8510fff100c244dd79f2372edb019db94c2c021c
Reviewed-on: http://review.couchbase.org/28684
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>
Tested-by: abhinav dangeti <abhinav.dangeti@gmail.com>