GitLab

 - Public API's log level is changed "INFO"
 - Internal API's log level is changed "DEBUG"
 - All of infomation which is Easysetup data is changed "INFO_PRIVATE" log level

Change-Id: I0eb97517be4da52fb0b202eb7c6379e85045a77d
Signed-off-by: Parkhi <h_w.park@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/17291Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Uze Choi <uzchoi@samsung.com>
Tested-by: Uze Choi <uzchoi@samsung.com>