Add postConsumerTopics Function and modify sendTopicList.

Add postConsumerTopics Function and modify sendTopicList.

this patch included,
1. Add postConsumerTopics, postConsumerTopics function is called when received OC_REST_POST.
2. Modify sendTopicList Logic.

second patch included,
modify invalid type for topic state.

third patch included,
modify invalid type for NSProviderGetListSize arg.

fourth patch included,
modify invalid type for cacheElement iterator.

Change-Id: Ief1ca496972e90819f04afc50c3849a83bb051e9
Signed-off-by: jaesick.shin <jaesick.shin@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/10479
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>