Modify bug which is related provider copy issue

Modify bug which is related provider copy issue

some APIs which is received NSProvider pointer as an API parameter
after calling and Processing these APIs, NSProvider was removed.
to prevent this problem, as a first step in the API, we added the logic to copy provider.

Change-Id: I3523691ec4992dc9dbf0b0824a4e2ff4df133568
Signed-off-by: YounghyunJoo <yh_.joo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/11107
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>