Fixed CLOUDSTACK-7242: Adding a securing config using configDepo doesnt work

In ConfigurationVo, changed the setter to do the encryption if required
like the getter. Called the setter in constructor as well.

Removed references of encryption check in different places.

Reviewed-by: Santhosh Edukulla

This closes #35
CLOUDSTACK-7800: Correcting code related to unplug NIC on VMware

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
Merge branch '4.5'