Add consumer logic for provider was stopped.

Add consumer logic for provider was stopped.

When consumer presence listener received event of
stopped provider or deleted notification resource of provider,
consumer service does not act anything.
In this patch,
consumer service will process for canceling observe and removing provider infomation.

Change-Id: I9133ddbcbe8e341584ebaf8152c22df003cbb2ff
Signed-off-by: KIM JungYong <jyong2.kim@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/10587
Reviewed-by: Chihyun Cho <ch79.cho@samsung.com>
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>