Added fix for bug 5056.

The fix contains fixes related to ssh library majorly.
Complete description should be available under bug
description.

Signed-off-by: Santhosh Edukulla <Santhosh.Edukulla@citrix.com>
Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
Increasing the timeout values to 600 seconds from 300 seconds

Timeout for ssh related test cases is increased based upon
few test run observations where ssh is taking more time during
restart scenarios as an example. We have done few changes to streamline
ssh library. This is in addition to those to keep less ssh script issues

Signed-off-by: Santhosh Edukulla <Santhosh.Edukulla@citrix.com>
Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-5099: Utils.py-has-wrong-reference, cleaned it. As well added Uniform naming convention
Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>

Conflicts:
	test/integration/component/test_portable_ip.py