[easysetup] Security feature integration for ownership transfer - Dev In Progress

[easysetup] Security feature integration for ownership transfer - Dev In Progress

- Sconscript modifications for security feature addition
- EnrolleeSecurity class for handling security handshake
- Modifications to support ownership step before provisioning when the enrollee needs security

Change-Id: I26b4fa9a4376691b8bfb42bcb023962337147c0b
Signed-off-by: lankamadan <lanka.madan@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/4461
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>