Insert license text.

Insert license text.

Change-Id: Ide755195b0041412d04aca7b11793682c4b0a406
Signed-off-by: Chul Lee <chuls.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/14933
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jongmin Choi <jminl.choi@samsung.com>
Reviewed-by: Jongsung Lee <js126.lee@samsung.com>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>
(cherry picked from commit 347410c8569a8d88671a7b5fc29f1b4a03fa0831)
Reviewed-on: https://gerrit.iotivity.org/gerrit/14939