[IOT-1533] fixed KeepAlive resource for receiving PUT, POST Message

[IOT-1533] fixed KeepAlive resource for receiving PUT, POST Message

Change-Id: Ie52fe040cd11319a34219efc942a2e102663ecba
Signed-off-by: Jung Seungho <shonest.jung@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/13847
Reviewed-by: Hyuna Jo <hyuna0213.jo@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Jee Hyeok Kim <jihyeok13.kim@samsung.com>
(cherry picked from commit 40f1a0f47e270d611fc8349276a87daba8ec4a60)
Reviewed-on: https://gerrit.iotivity.org/gerrit/14553
Reviewed-by: Uze Choi <uzchoi@samsung.com>