[IOT-1550] Resolved reset issue on rowner of cred

[IOT-1550] Resolved reset issue on rowner of cred

https://jira.iotivity.org/browse/IOT-1550

issue : Rowner of cred is reset, when saving Cert. chain
        using SRPSaveTrustCertChain and SRPSaveOwnCertChain.

Patch 1: upload patch
Patch 2: rebase
Patch 3: Apply review comment

Change-Id: I59cdbfb30253c61e1c27dcf640958899af976a96
Signed-off-by: js126.lee <js126.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14327
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Chul Lee <chuls.lee@samsung.com>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>