Update the keepalive response payload for the ping request

Update the keepalive response payload for the ping request

- add resource type/interface name to response payload
- add interval value to response payload
- POST method is used to send ping message

Change-Id: I6c74122bdb4a726a5c77f8a8e742d202f639972b
Signed-off-by: hyuna0213.jo <hyuna0213.jo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/13597
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Reviewed-by: Phil Coval <philippe.coval@osg.samsung.com>
(cherry picked from commit 4444b92de6df210c62a2b7d463f74eb0793238f7)
Reviewed-on: https://gerrit.iotivity.org/gerrit/13849
Reviewed-by: Jaehong Jo <jaehong.jo@samsung.com>
Reviewed-by: Dan Mihai <Daniel.Mihai@microsoft.com>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>