[IOT-1587] Fix cloud certificate to follow TLS specification

[IOT-1587] Fix cloud certificate to follow TLS specification

1. Update cloud sample certificate to meet TLS specification of proposal.
   (Add uuid:xxx value to public certificate CN field)

https://jira.iotivity.org/browse/IOT-1587

Change-Id: I9aacd8f31f50862a0b962cef3d68a389710d4568
Signed-off-by: Jee Hyeok Kim <jihyeok13.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14609
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
(cherry picked from commit c686e58be7d876aba42c9fef69049e04275d0478)
Reviewed-on: https://gerrit.iotivity.org/gerrit/15701