Change PRESENCE payload in correct format.

Change PRESENCE payload in correct format.

Removes enclosing array and rep from the presence payload.

It changes structure from
[{
  rep: {
   presence payload
  }
}]
to
{
  presence payload

}

Change-Id: I44f7fa1d6f18a0a883057ffb52cfc27c5ead596d
Signed-off-by: Habib Virji <habib.virji@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/4467
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>