Update Update OCF log level for NS LOG.

Update Update OCF log level for NS LOG.

 - Change DEBUG to INFO_PRIVATE in NS LOG with private data

Change-Id: I69a764e8a1fc9c1cc4a1a4e9785d658dd9d754bd
Signed-off-by: jake <jaehong2.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/17523
Reviewed-by: Chihyun Cho <ch79.cho@samsung.com>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: JungYong KIM <jyong2.kim@samsung.com>